| Nominal Species (n = 2552) | Present allocation (n = 1784) | Ref. |
|---|---|---|
| Geophagus abalios López-Fernández & Taphorn, 2004 | Geophagus abalios | 52005 |
| Limnochromis abeelei Poll, 1949 | Greenwoodochromis abeelei | 119385 |
| Heros acaroides Hensel, 1870 | Australoheros acaroides | 85206 |
| Heros acaroides (non Hensel, 1870) | Australoheros facetus | 85206 |
| Haplochromis acidens Greenwood, 1967 | Haplochromis acidens | 4983 |
| Chromys acora Castelnau, 1855 | Mesonauta acora | 36377 |
| Apistogramma acrensis Staeck, 2003 | Apistogramma acrensis | 55839 |
| Chromis acuticeps Steindachner, 1866 | Pharyngochromis acuticeps | 4983 |
| Geophagus acuticeps Heckel, 1840 | Satanoperca acuticeps | 36377 |
| Lichnochromis acuticeps Trewavas, 1935 | Lichnochromis acuticeps | 5658 |
| Placidochromis acuticeps Hanssens, 2004 | Placidochromis acuticeps | 55898 |
| Crenicichla acutirostris Günther, 1862 | Crenicichla acutirostris | 36377 |
| Haplochromis acutirostris Regan, 1922 | Haplochromis serranus | 4983 |
| Placidochromis acutirostris Hanssens, 2004 | Placidochromis acutirostris | 55898 |
| Cichlasoma acutum Miller, 1907 | Cribroheros robertsoni | 7335 |
| Nannacara adoketa Kullander & Prada-Pedreros, 1993 | Nannacara adoketa | 26678 |
| Tilapia adolfi Steindachner, 1915 | Oreochromis urolepis | 2 |
| Tilapia adolfi Steindachner, 1909 | Simochromis diagramma | 5694 |
| Tilapia adolphifrederici Boulenger, 1914 | Haplochromis adolphifrederici | 4983 |
| Acara adspersa Günther, 1862 | Nandopsis tetracanthus | 7335 |
| Crenicichla adspersa Heckel, 1840 | Crenicichla adspersa | 36377 |
| Haplochromis aelocephalus Greenwood, 1959 | Haplochromis aelocephalus | 4983 |
| Haplochromis aeneocolor Greenwood, 1973 | Haplochromis aeneocolor | 4983 |
| Diplotaxodon aeneus Turner & Stauffer, 1998 | Diplotaxodon aeneus | 30390 |
| Tilapia aequatorialis Roman, 1971 | Sarotherodon nigripinnis | 2 |
| Symphysodon aequifasciata axelrodi Schultz, 1960 | Symphysodon aequifasciatus | 36377 |
| Symphysodon aequifasciata haraldi Schultz, 1960 | Symphysodon aequifasciatus | 36377 |
| Acara aequinoctialis Regan, 1905 | Andinoacara rivulatus | 93151 |
| Apistogramma aequipinnis Ahl, 1938 | Apistogramma borellii | 36377 |
| Hemichromis afer Günther, 1894 | Cynotilapia afra | 5622 |
| Heros affinis Günther, 1862 | Thorichthys affinis | 36377 |
| Tilapia affinis (non Duméril, 1861) | Oreochromis aureus | 5166 |
| Tilapia affinis Duméril, 1861 | Coptodon guineensis | 5163 |
| Geophagus agassizii Steindachner, 1875 | Apistogramma agassizii | 36377 |
| Apistogramma aguarico Römer & Hahn, 2013 | Apistogramma aguarico | 94125 |
| Haplochromis ahli Trewavas, 1935 | Sciaenochromis ahli | 5692 |
| Haplochromis ahli (non Trewavas, 1935) | Sciaenochromis fryeri | 40899 |
| Haplochromis akika Lippitsch, 2003 | Haplochromis akika | 52072 |
| Apistogramma alacrina Kullander, 2004 | Apistogramma alacrina | 52483 |
| Lethrinops alba (non Regan, 1922) | Lethrinops marginatus | 267 |
| Haplochromis albertianus (non Regan, 1929) | Haplochromis bullatus | 4983 |
| Haplochromis albertianus Regan, 1929 | Haplochromis albertianus | 4983 |
| Divandu albimarginatus Lamboj & Snoeks, 2000 | Divandu albimarginatus | 45129 |
| Ectodus albini Steindachner, 1909 | Xenotilapia albini | 50515 |
| Haplochromis albolabris Trewavas & Thys van den Audenaerde, 1969 | Thoracochromis albolabris | 52307 |
| Lethrinops albus Regan, 1922 | Lethrinops albus | 4985 |
| Tilapia alcalica Hilgendorf, 1905 | Oreochromis alcalicus | 32272 |
| Otopharynx aletes Oliver, 2018 | Otopharynx aletes | 119408 |
| Cichlasoma alfari Meek, 1907 | Cribroheros alfari | 7335 |
| Tilapia alleni Fowler, 1931 | Oreochromis macrochir | 2 |
| Apistogramma allpahuayo Römer, Beninde, Duponchelle, Díaz, Ortega, Hahn, Soares, Cachay, Dávila, Cornejo & Renno, 2012 | Apistogramma allpahuayo | 91057 |
| Astatoreochromis alluaudi Pellegrin, 1904 | Astatoreochromis alluaudi | 5602 |
| Astatoreochromis alluaudi occidentalis Greenwood, 1959 | Astatoreochromis alluaudi | 5602 |
| Otopharynx alpha Oliver, 2018 | Otopharynx alpha | 119408 |
| Crenicichla alta Eigenmann, 1912 | Crenicichla alta | 36377 |
| Labeotropheus alticodia Phiri & Pauers, 2023 | Labeotropheus alticodia | 128773 |
| Geophagus altifrons Heckel, 1840 | Geophagus altifrons | 36377 |
| Heros altifrons Kner, 1863 | Cribroheros altifrons | 36377 |
| Haplochromis altigenis Regan, 1922 | Haplochromis altigenis | 4983 |
| Crenicara altispinosa Haseman, 1911 | Mikrogeophagus altispinosus | 36377 |
| Cryptoheros altoflavus Allgayer, 2001 | Amatitlania altoflava | 114771 |
| Pterophyllum altum Pellegrin, 1903 | Pterophyllum altum | 36377 |
| Pterophyllum altum (non Pellegrin, 1903) | Pterophyllum scalare | 4537 |
| Diplotaxodon altus Stauffer, Phiri & Konings, 2018 | Diplotaxodon altus | 127500 |
| Lethrinops altus Trewavas, 1931 | Lethrinops altus | 4985 |
| Serranochromis altus Winemiller & Kelso-Winemiller, 1991 | Serranochromis altus | 27496 |
| Serranochromis alvum Stauffer, Bills & Skelton, 2021 | Serranochromis alvum | 123822 |
| Amphilophus amarillo Stauffer & McKaye, 2002 | Amphilophus amarillo | 36377 |
| Labrus amarus Larrañaga, 1923 | Crenicichla scottii | 26688 |
| Cichlasoma amazonarum Kullander, 1983 | Cichlasoma amazonarum | 36377 |
| Apistogramma ambloplitoides Fowler, 1940 | Acaronia nassa | 9088 |
| Geophagus amoenus Cope, 1872 | Apistogramma amoena | 36377 |
| Uaru amphiacanthoides Heckel, 1840 | Uaru amphiacanthoides | 36377 |
| Tilapia amphimelas Hilgendorf, 1905 | Oreochromis amphimelas | 2 |
| Caquetaia amploris Fowler, 1945 | Caquetaia myersi | 36377 |
| Haplochromis ampullarostratus Schraml, 2004 | Haplochromis ampullarostratus | 52362 |
| Cyrtocara anagenys Oliver, 1984 | Exochochromis anagenys | 267 |
| Exochochromis anagenys Oliver, 1989 | Exochochromis anagenys | 5634 |
| Crenicichla anamiri Ito & Rapp Py-Daniel, 2015 | Crenicichla anamiri | 104708 |
| Haplochromis anaphyrmus Burgess & Axelrod, 1973 | Mylochromis anaphyrmus | 267 |
| Chromys andersonii Castelnau, 1861 | Oreochromis andersonii | 5166 |
| Petrochromis andersonii Boulenger, 1901 | Oreochromis tanganicae | 2 |
| Chromis andreae Günther, 1864 | Coptodon zillii | 5163 |
| Apistogramma angayuara Kullander & Ferreira, 2005 | Apistogramma angayuara | 56722 |
| Australoheros angiru Říčan, Piálek, Almirón & Casciotta, 2011 | Australoheros angiru | 87600 |
| Hemichromis angolensis Steindachner, 1865 | Hemichromis angolensis | 128620 |
| Sarotherodon angolensis Trewavas, 1973 | Oreochromis angolensis | 5166 |
| Tilapia angolensis Thys van den Audenaerde, 1969 | Oreochromis angolensis | 54357 |
| Heros angulifer Günther, 1862 | Chuco intermedium | 7335 |
| Paratilapia angusticeps Boulenger, 1907 | Serranochromis angusticeps | 5693 |
| Paratilapia angusticeps (non Boulenger, 1907) | Serranochromis macrocephalus | 5693 |
| Haplochromis angustifrons Boulenger, 1914 | Haplochromis angustifrons | 4983 |
| Haplochromis angustifrons (non Pappenheim & Boulenger, 1914) | Haplochromis schubotzi | 4983 |
| Haplochromis angustifrons (non Pappenheim & Boulenger, 1914) | Haplochromis gracilior | 4983 |
| Cyrtocara annectens Regan, 1922 | Protomelas annectens | 267 |
| Haplochromis annectens Regan, 1922 | Haplochromis prodromus | 4983 |
| Pelmatochromis annectens Boulenger, 1913 | Thysochromis annectens | 5706 |
| Tropheus annectens Boulenger, 1900 | Tropheus annectens | 5713 |
| Haplochromis annectidens (non Trewavas, 1933) | Haplochromis nubilus | 4983 |
| Haplochromis annectidens Trewavas, 1933 | Haplochromis annectidens | 4983 |
| Nannacara anomala Regan, 1905 | Nannacara anomala | 26372 |
| Pelmatochromis ansorgii Boulenger, 1901 | Thysochromis ansorgii | 5706 |
| Tilapia ansorgii Boulenger, 1911 | Heterotilapia buettikoferi | 5163 |
| Crenicichla anthurus Cope, 1872 | Crenicichla anthurus | 9088 |
| Haplochromis antleter Mietes & Witte, 2010 | Haplochromis antleter | 85523 |
| Otopharynx antron Cleaver, Konings & Stauffer, 2009 | Otopharynx antron | 82798 |
| Diplotaxodon apogon Turner & Stauffer, 1998 | Diplotaxodon apogon | 30390 |
| Haplochromis apogonoides Greenwood, 1967 | Haplochromis apogonoides | 4983 |
| Bujurquina apoparuana Kullander, 1986 | Bujurquina apoparuana | 9088 |
| Chromys appendiculata Castelnau, 1855 | Heros efasciatus | 36377 |
| Haplochromis aquila Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis aquila | 126312 |
| Aulonocara aquilonium Konings, 1995 | Aulonocara aquilonium | 40898 |
| Laetacara araguaiae Ottoni & Costa, 2009 | Laetacara araguaiae | 80972 |
| Cichlasoma araguaiense Kullander, 1983 | Cichlasoma araguaiense | 36377 |
| Haplochromis arcanus Greenwood & Gee, 1969 | Haplochromis arcanus | 4983 |
| Haplochromis argens de Zeeuw, Westbroek & Witte, 2013 | Haplochromis argens | 92860 |
| Cichlasoma argentea Allgayer, 1991 | Maskaheros argenteus | 36377 |
| Diplotaxodon argenteus Trewavas, 1935 | Diplotaxodon argenteus | 5628 |
| Haplochromis argenteus Regan, 1922 | Haplochromis argenteus | 4983 |
| Lethrinops argenteus Ahl, 1926 | Lethrinops argenteus | 4985 |
| Cichla argus Valenciennes, 1821 | Cichla orinocensis | 57716 |
| Placidochromis argyrogaster Hanssens, 2004 | Placidochromis argyrogaster | 55898 |
| Haplochromis argyrosoma Regan, 1922 | Otopharynx argyrosoma | 267 |
| Geophagus argyrostictus Kullander, 1991 | Geophagus argyrostictus | 36377 |
| Tylochromis aristoma Stiassny, 1989 | Tylochromis aristoma | 5714 |
| Cichlasoma arnoldi Ahl, 1936 | Hypselecara coryphaenoides | 36377 |
| Paratilapia arnoldi Gilchrist & Thompson, 1917 | Pharyngochromis darlingi | 5596 |
| Pelmatochromis arnoldi Boulenger, 1912 | Thysochromis ansorgii | 5706 |
| Tilapia arnoldi Gilchrist & Thompson, 1917 | Oreochromis mossambicus | 52330 |
| Labeotropheus artatorostris Pauers, 2017 | Labeotropheus artatorostris | 116021 |
| Haplochromis artaxerxes Greenwood, 1962 | Haplochromis artaxerxes | 4983 |
| Apistogramma arua Römer & Warzel, 1998 | Apistogramma arua | 28729 |
| Tomocichla asfraci Allgayer, 2002 | Tomocichla asfraci | 36377 |
| Haplochromis astatodon Regan, 1921 | Haplochromis astatodon | 4983 |
| Haplochromis astatodon (non Regan, 1921) | Haplochromis nigroides | 4983 |
| Astatotilapia astatodon nigroides Pellegrin, 1928 | Haplochromis nigroides | 4983 |
| Amphilophus astorquii Stauffer, McCrary & Black, 2008 | Amphilophus astorquii | 75014 |
| Crenicichla astroblepa Ploeg, 1986 | Crenicichla cametana | 36377 |
| Cichla atabapensis Humboldt, 1821 | Cichla temensis | 36377 |
| Apistogramma atahualpa Römer, 1997 | Apistogramma atahualpa | 36377 |
| Pseudotropheus ater Stauffer, 1988 | Chindongo ater | 119465 |
| Lethrinops atrilabris Turner, 2022 | Lethrinops atrilabris | 127517 |
| Copadichromis atripinnis Stauffer & Sato, 2002 | Copadichromis atripinnis | 42940 |
| Haplochromis atritaeniatus Regan, 1922 | Buccochromis atritaeniatus | 5607 |
| Cichlasoma atromaculatum Regan, 1912 | Mesoheros atromaculatus | 114771 |
| Lamprologus attenuatus Steindachner, 1909 | Lepidiolamprologus attenuatus | 5655 |
| Trematocranus auditor Trewavas, 1935 | Aulonocara auditor | 4975 |
| Labeotropheus aurantinfra Phiri & Pauers, 2023 | Labeotropheus aurantinfra | 128773 |
| Chromis auratus Boulenger, 1897 | Melanochromis auratus | 5663 |
| Nannacara aureocephalus Allgayer, 1983 | Nannacara aureocephalus | 36377 |
| Pelmatochromis aureocephalus Meinken, 1960 | Pelvicachromis pulcher | 5677 |
| Chromis aureus Steindachner, 1864 | Oreochromis aureus | 2 |
| Haplochromis aureus Vranken, Van Steenberge, Mbalassa & Snoeks, 2023 | Haplochromis aureus | 128938 |
| Heros aureus Günther, 1862 | Thorichthys aureus | 36377 |
| Microchromis aurifrons Tawil, 2011 | Cynotilapia aurifrons | 119465 |
| Paratilapia aurita Boulenger, 1901 | Limnochromis auritus | 5659 |
| Haplochromis auritus Regan, 1922 | Lethrinops auritus | 4985 |
| Hemichromis auritus Gill, 1862 | Hemichromis elongatus | 5644 |
| Tilapia auromarginata Boulenger, 1908 | Otopharynx auromarginatus | 267 |
| Pseudotropheus aurora Burgess, 1976 | Maylandia aurora | 27596 |
| Geophagus australe Eigenmann, 1907 | Gymnogeophagus australis | 36377 |
| Chaetobranchopsis australis Eigenmann & Ward, 1907 | Chaetobranchopsis australis | 36377 |
| Heros autochthon Günther, 1862 | Australoheros autochthon | 114771 |
| Australoheros autrani Ottoni & Costa, 2008 | Australoheros autrani | 79631 |
| Haplochromis avium Regan, 1929 | Haplochromis avium | 4983 |
| Aequidens awani Haseman, 1911 | Aequidens viridis | 36377 |
| Chuco axelrodi Fernández-Yépez, 1971 | Hypselecara coryphaenoides | 36377 |
| Cynotilapia axelrodi Burgess, 1976 | Cynotilapia axelrodi | 5622 |
| Parananochromis axelrodi Lamboj & Stiassny, 2003 | Parananochromis axelrodi | 50579 |
| Pundamilia azurea Seehausen & Lippitsch, 1998 | Haplochromis azureus | 12750 |
| Copadichromis azureus (non Konings, 1990) | Copadichromis insularis | 57549 |
| Copadichromis azureus Konings, 1990 | Copadichromis azureus | 4979 |
| Aequidens azurifer Fowler, 1911 | Andinoacara rivulatus | 93151 |
| Simochromis babaulti Pellegrin, 1927 | Pseudosimochromis babaulti | 107730 |
| Geophagus badiipinnis Cope, 1872 | Chaetobranchus flavescens | 36377 |
| Apistogramma baenschi Römer, Hahn, Römer, Soares & Wöhler, 2004 | Apistogramma baenschi | 55840 |
| Aulonocara baenschi Meyer & Riehl, 1985 | Aulonocara baenschi | 4975 |
| Haplochromis bakongo Thys van den Audenaerde, 1964 | Thoracochromis bakongo | 52307 |
| Tilapia bakossiorum Stiassny, Schliewen & Dominey, 1992 | Coptodon bakossiorum | 93285 |
| Melanochromis baliodigma Bowers & Stauffer, 1997 | Melanochromis baliodigma | 26078 |
| Tilapia baloni Trewavas & Stewart, 1975 | Tilapia baloni | 93285 |
| Haplochromis balteatus Trewavas, 1935 | Mylochromis balteatus | 267 |
| Heros balteatus Gill, 1877 | Hypsophrys nicaraguensis | 36377 |
| Geophagus balzanii Perugia, 1891 | Gymnogeophagus balzanii | 36377 |
| Tylochromis banguelensis (non Regan, 1920) | Tylochromis variabilis | 5714 |
| Tylochromis banguelensis (non Regan, 1920) | Tylochromis regani | 5714 |
| Tylochromis bangwelensis Regan, 1920 | Tylochromis bangwelensis | 5714 |
| Haplochromis barbarae Greenwood, 1967 | Haplochromis barbarae | 4983 |
| Australoheros barbosae Ottoni & Costa, 2008 | Australoheros barbosae | 79631 |
| Haplochromis bareli van Oijen, 1991 | Haplochromis bareli | 26282 |
| Apistogramma barlowi Römer & Hahn, 2008 | Apistogramma barlowi | 75695 |
| Pseudotropheus barlowi Mckaye & Stauffer, 1986 | Maylandia barlowi | 27596 |
| Acara bartoni Bean, 1892 | Herichthys bartoni | 36377 |
| Haplochromis bartoni Greenwood, 1962 | Haplochromis bartoni | 4983 |
| Heros basilaris Gill, 1877 | Amphilophus citrinellus | 36377 |
| Pelmatochromis batesii Boulenger, 1901 | Benitochromis batesii | 5616 |
| Pelmatochromis batesii (non Boulenger, 1901) | Benitochromis finleyi | 5616 |
| Hemitilapia bayoni (non Boulenger, 1908) | Haplochromis plagiodon | 4983 |
| Hemitilapia bayoni Boulenger, 1908 | Haplochromis obliquidens | 4983 |
| Paratilapia bayoni Boulenger, 1909 | Haplochromis bayoni | 4983 |
| Tilapia bayoni Boulenger, 1911 | Haplochromis niloticus | 4983 |
| Haplochromis beadlei Trewavas, 1933 | Haplochromis beadlei | 4983 |
| Heros beani Jordan, 1889 | Mayaheros beani | 36377 |
| Pelmatochromis belladorsalis Innes, 1935 | Chromidotilapia guntheri | 5616 |
| Hemibates bellcrossi Poll, 1976 | Greenwoodochromis bellcrossi | 5641 |
| Chindongo bellicosus Li, Konings & Stauffer, 2016 | Chindongo bellicosus | 119465 |
| Haplochromis bellicosus Ahl, 1926 | Champsochromis caeruleus | 5611 |
| Theraps belone Allgayer, 1989 | Theraps irregularis | 36377 |
| Tilapia bemini Thys van den Audenaerde, 1972 | Coptodon bemini | 93285 |
| Melanochromis benetos Bowers & Stauffer, 1997 | Pseudotropheus benetos | 89864 |
| Metriaclima benetos Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia benetos | 27596 |
| Bujurquina beniensis Careaga, Miranda, & Carvajal-Vallejos, 2023 | Bujurquina beniensis | 128932 |
| Haplochromis benthicola Matthes, 1962 | Trematochromis benthicola | 57075 |
| Sciaenochromis benthicola Konings, 1993 | Sciaenochromis benthicola | 40899 |
| Tilapia betsileana Boulenger, 1899 | Ptychochromoides betsileanus | 5687 |
| Haplochromis bicolor Boulenger, 1906 | Haplochromis bicolor | 12750 |
| Haplochromis bicolor (non Boulenger, 1906) | Haplochromis retrodens | 5648 |
| Haplochromis bicolor (non Boulenger, 1906) | Haplochromis chromogynos | 4983 |
| Heros bifasciatus Steindachner, 1864 | Vieja bifasciata | 36377 |
| Neolamprologus bifasciatus Büscher, 1993 | Neolamprologus bifasciatus | 50569 |
| Telmatochromis bifrenatus Myers, 1936 | Telmatochromis bifrenatus | 5704 |
| Tilapia bilineata Pellegrin, 1900 | Congolapia bilineata | 92878 |
| Cichla bilineatus Nakashima, 1941 | Cichla monoculus | 9088 |
| Nannacara bimaculata Eigenmann, 1912 | Nannacara bimaculata | 36377 |
| Hemichromis bimaculatus (non Gill, 1862) | Rubricatochromis lifalili | 5644 |
| Hemichromis bimaculatus (non Günther, 1862) | Rubricatochromis letourneuxi | 5644 |
| Hemichromis bimaculatus Gill, 1862 | Rubricatochromis bimaculatus | 128620 |
| Labrus bimaculatus Linnaeus, 1758 | Cichlasoma bimaculatum | 36377 |
| Plecodus bimaculatus Steindachner, 1909 | Perissodus paradoxus | 5681 |
| Crenicichla biocellata Ihering, 1914 | Crenicichla lacustris | 36377 |
| Cichlasoma biocellatum Regan, 1909 | Rocio octofasciata | 74403 |
| Cichlosoma biocellatum Regan, 1909 | Rocio octofasciata | 74403 |
| Sparus biocellatus Walbaum, 1792 | Crenicichla saxatilis | 36377 |
| Tropheops biriwira Li, Konings & Stauffer, 2016 | Tropheops biriwira | 119465 |
| Cichlosoma biseriatum Regan, 1913 | Andinoacara biseriatus | 36377 |
| Chaetobranchopsis bitaeniatus Ahl, 1936 | Chaetobranchopsis orbicularis | 36377 |
| Paratilapia bleekeri Sauvage, 1891 | Paratilapia polleni | 5674 |
| Steatocranus bleheri Meyer, 1993 | Steatocranus bleheri | 42983 |
| Andinoacara blombergi Wijkmark, Kullander & Barriga Salazar, 2012 | Andinoacara blombergi | 93151 |
| Hemichromis bloyeti Sauvage, 1883 | Astatotilapia bloyeti | 4983 |
| Haplochromis boadzulu Iles, 1960 | Nyassachromis boadzulu | 267 |
| Neetroplus bocourti Vaillant & Pellegrin, 1902 | Cincelichthys bocourti | 114771 |
| Haplochromis bodyi Ahl, 1926 | Taeniochromis holotaenia | 5699 |
| Cichlasoma boliviense Kullander, 1983 | Cichlasoma boliviense | 9088 |
| Haplochromis boops Greenwood, 1967 | Haplochromis boops | 4983 |
| Placidochromis boops Hanssens, 2004 | Placidochromis boops | 55898 |
| Tilapia boops Boulenger, 1901 | Ophthalmotilapia boops | 5669 |
| Placidochromis borealis Hanssens, 2004 | Placidochromis borealis | 55898 |
| Heterogramma borellii Regan, 1906 | Apistogramma borellii | 36377 |
| Tilapia borkuana Pellegrin, 1919 | Sarotherodon galilaeus | 2 |
| Haplochromis borleyi Iles, 1960 | Copadichromis borleyi | 267 |
| Chromidotilapia bosumtwensis Paulo, 1979 | Chromidotilapia guntheri | 26710 |
| Cichlasoma bouchellei Fowler, 1923 | Cribroheros alfari | 36377 |
| Enantiopus boulengeri Poll, 1942 | Xenotilapia boulengeri | 5717 |
| Julidochromis boulengeri Steindachner, 1909 | Lepidiolamprologus boulengeri | 5667 |
| Pelmatochromis boulengeri Lönnberg, 1903 | Chromidotilapia guntheri | 5616 |
| Retroculus boulengeri Eigenmann & Bray, 1894 | Retroculus lapidifer | 36377 |
| Tilapia boulengeri Pellegrin, 1903 | Sarotherodon galilaeus | 4999 |
| Haplochromis boultoni Nichols & LaMonte, 1931 | Champsochromis caeruleus | 267 |
| Cleithrochromis bowleyi Eccles, 1974 | Alticorpus macrocleithrum | 5594 |
| Geophagus brachybranchus Kullander & Nijssen, 1989 | Geophagus brachybranchus | 36377 |
| Telmatochromis brachygnathus Hanssens & Snoeks, 2003 | Telmatochromis brachygnathus | 53812 |
| Hemitaeniochromis brachyrhynchus Oliver, 2012 | Hemitaeniochromis brachyrhynchus | 91204 |
| Geophagus brachyurus Cope, 1894 | Gymnogeophagus rhabdotus | 36377 |
| Chromis brasiliensis Quoy & Gaimard, 1824 | Geophagus brasiliensis | 36377 |
| Geophagus brasiliensis Kner, 1865 | Geophagus brasiliensis | 36377 |
| Perca brasiliensis Bloch, 1792 | Crenicichla brasiliensis | 36377 |
| Crenicichla brasiliensis fasciata Pellegrin, 1904 | Crenicichla cincta | 9088 |
| Geophagus brasiliensis iporangensis Haseman, 1911 | Geophagus iporangensis | 36377 |
| Geophagus brasiliensis itapicuruensis Haseman, 1911 | Geophagus itapicuruensis | 36377 |
| Crenicichla brasiliensis marmorata Pellegrin, 1904 | Crenicichla marmorata | 36377 |
| Haplochromis brauschi Poll & Thys van den Audenaerde, 1965 | Thoracochromis brauschi | 52307 |
| Paratheraps breidohri Werner & Stawikowski, 1987 | Vieja breidohri | 86652 |
| Lamprologus brevianalis Boulenger, 1906 | Neolamprologus tetracanthus | 5667 |
| Chetia brevicauda Bills & Weyl, 2002 | Chetia brevicauda | 52267 |
| Haplochromis breviceps Regan, 1922 | Nyassachromis breviceps | 267 |
| Tilapia brevimanus Boulenger, 1911 | Tilapia brevimanus | 93285 |
| Aulonocara brevinidus Konings, 1995 | Aulonocara brevinidus | 40898 |
| Parananochromis brevirostris (non Lamboj & Stiassny, 2003) | Parananochromis elobatus | 97361 |
| Parananochromis brevirostris Lamboj & Stiassny, 2003 | Parananochromis brevirostris | 50579 |
| Trematocranus brevirostris Trewavas, 1935 | Aulonocara brevirostre | 4975 |
| Apistogramma brevis Kullander, 1980 | Apistogramma brevis | 36377 |
| Chetia brevis Jubb, 1968 | Chetia brevis | 7248 |
| Lamprologus brevis (non Boulenger, 1899) | Lamprologus ocellatus | 5654 |
| Lamprologus brevis Boulenger, 1899 | Neolamprologus brevis | 5667 |
| Melanochromis brevis Trewavas, 1935 | Pseudotropheus brevis | 89864 |
| Rhamphochromis brevis Trewavas, 1935 | Rhamphochromis woodi | 55949 |
| Tilapia brevis Boulenger, 1908 | Tramitichromis brevis | 267 |
| Chalinochromis brichardi Poll, 1974 | Chalinochromis brichardi | 5610 |
| Lamprologus brichardi Poll, 1974 | Neolamprologus brichardi | 5667 |
| Teleogramma brichardi Poll, 1959 | Teleogramma brichardi | 5703 |
| Telmatochromis brichardi Louisy, 1989 | Telmatochromis brichardi | 5704 |
| Tropheus brichardi (non Nelissen & Thys van den Audenaerde, 1975) | Tropheus moorii | 5713 |
| Tropheus brichardi Nelissen & Thys van den Audenaerde, 1975 | Tropheus brichardi | 5713 |
| Cyprichromis brieni Poll, 1981 | Paracyprichromis brieni | 5671 |
| Crenicichla britskii Kullander, 1982 | Crenicichla britskii | 36377 |
| Geophagus brokopondo Kullander & Nijssen, 1989 | Geophagus brokopondo | 36377 |
| Cyrtocara brooksi Oliver, 1984 | Otopharynx brooksi | 267 |
| Otopharynx brooksi Oliver, 1989 | Otopharynx brooksi | 4991 |
| Haplochromis brownae Greenwood, 1962 | Haplochromis brownae | 4983 |
| Tilapia browni Nichols, 1923 | Oreochromis spilurus | 2 |
| Chaetobranchus bruneus Heckel, 1840 | Chaetobranchus flavescens | 26372 |
| Geophagus bucephalus Hensel, 1870 | Gymnogeophagus labiatus | 36377 |
| Lamprologus buescheri Staeck, 1983 | Neolamprologus buescheri | 5667 |
| Paratilapia buettikoferi Steindachner, 1894 | Pelmatochromis buettikoferi | 5676 |
| Haplochromis bullatus Trewavas, 1938 | Haplochromis bullatus | 4983 |
| Paraneetroplus bulleri Regan, 1905 | Paraneetroplus bulleri | 36377 |
| Perissodus burgeoni David, 1936 | Perissodus microlepis | 5678 |
| Telmatochromis burgeoni Poll, 1942 | Telmatochromis temporalis | 53812 |
| Chromis burtoni Günther, 1894 | Astatotilapia burtoni | 4983 |
| Amphilophus bussingi Loiselle, 1997 | Cribroheros bussingi | 36377 |
| Chromis busumanus Günther, 1903 | Tilapia busumana | 5163 |
| Chromis buttikoferi Hubrecht, 1881 | Heterotilapia buettikoferi | 93285 |
| Haplochromis buysi Penrith, 1970 | Thoracochromis buysi | 7248 |
| Haplochromis bwathondii Niemantsverdriet & Witte, 2010 | Haplochromis bwathondii | 85523 |
| Tilapia bythobates Stiassny, Schliewen & Dominey, 1992 | Coptodon bythobates | 93285 |
| Gymnogeophagus caaguazuensis Staeck, 2006 | Gymnogeophagus caaguazuensis | 78439 |
| Tilapia cabrae (non Boulenger, 1899) | Pseudocrenilabrus philander | 5682 |
| Tilapia cabrae Boulenger, 1899 | Pelmatolapia cabrae | 93285 |
| Apistogramma cacatuoides Hoedeman, 1951 | Apistogramma cacatuoides | 36377 |
| Serranochromis cacuchi Stauffer, Bills & Skelton, 2021 | Serranochromis cacuchi | 123822 |
| Paratilapia caerulea Boulenger, 1908 | Champsochromis caeruleus | 267 |
| Cichlasoma caeruleogula Fowler, 1936 | Chuco microphthalmus | 7335 |
| Labidochromis caeruleus Fryer, 1956 | Labidochromis caeruleus | 5653 |
| Apistogramma caetei Kullander, 1980 | Apistogramma caetei | 36377 |
| Cichlasoma cajali Álvarez & Gutierrez, 1953 | Amphilophus trimaculatus | 36377 |
| Tilapia calciati Gianferrari, 1924 | Oreochromis niloticus | 2 |
| Pseudotropheus callainos Stauffer & Hert, 1992 | Maylandia callainos | 27596 |
| Haplochromis callichromus Poll, 1948 | Thoracochromis callichromus | 52307 |
| Chromis callipterus Günther, 1894 | Astatotilapia calliptera | 4983 |
| Lamprologus callipterus Boulenger, 1906 | Lamprologus callipterus | 5654 |
| Paratilapia calliura Boulenger, 1901 | Reganochromis calliurus | 5688 |
| Lamprologus calliurus Boulenger, 1906 | Neolamprologus brevis | 5667 |
| Heros callolepis Regan, 1904 | Thorichthys callolepis | 36377 |
| Cichlasoma calobrense Meek & Hildebrand, 1913 | Darienheros calobrensis | 114771 |
| Lamprologus calvus Poll, 1978 | Altolamprologus calvus | 5598 |
| Tilapia cameronensis Holly, 1927 | Coptodon cameronensis | 93285 |
| Hemichromis camerounensis Bitja-Nyom, Agnèse, Pariselle, Bilong-Bilong, Gilles & Snoeks, 2021 | Hemichromis camerounensis | 123791 |
| Pelmatochromis camerunensis Thys van den Audenaerde, 1968 | Pelvicachromis sacrimontis | 119364 |
| Crenicichla cametana Steindachner, 1911 | Crenicichla cametana | 36377 |
| Geophagus camopiensis Pellegrin, 1903 | Geophagus camopiensis | 36377 |
| Geophagus camurus Cope, 1894 | Gymnogeophagus gymnogenys | 36377 |
| Etroplus canarensis Day, 1877 | Etroplus canarensis | 4833 |
| Tilapia cancellata Nichols, 1923 | Oreochromis niloticus | 5166 |
| Neolamprologus cancellatus Aibara, Takahashi & Nakaya, 2005 | Neolamprologus cancellatus | 56628 |
| Haplochromis cancellus Greenwood, 1963 | Protomelas taeniolatus | 267 |
| Taeniacara candidi Myers, 1935 | Taeniacara candidi | 36377 |
| Labeotropheus candipygia Pauers & Phiri, 2023 | Labeotropheus candipygia | 128773 |
| Telmatochromis caninus Poll, 1942 | Telmatochromis dhonti | 5704 |
| Trematocara caparti Poll, 1948 | Trematocara caparti | 5708 |
| Australoheros capixaba Ottoni, 2010 | Australoheros capixaba | 84134 |
| Crenicichla cardiostigma Ploeg, 1991 | Crenicichla alta | 36377 |
| Chaetodon caris Hamilton, 1822 | Etroplus suratensis | 6028 |
| Paratilapia carlottae Boulenger, 1905 | Sargochromis carlottae | 5693 |
| Tilapia caroli Holly, 1930 | Sarotherodon caroli | 2 |
| Neetroplus carpintis Jordan & Snyder, 1899 | Herichthys carpintis | 36377 |
| Haplochromis cassius Greenwood & Barel, 1978 | Haplochromis cassius | 4983 |
| Steatocranus casuarius Poll, 1939 | Steatocranus casuarius | 5696 |
| Xenotilapia caudafasciata Poll, 1951 | Xenotilapia caudafasciata | 50515 |
| Pelmatochromis caudifasciatus Boulenger, 1913 | Parananochromis caudifasciatus | 5673 |
| Apistogramma caudomaculata Mesa S. & Lasso, 2011 | Apistogramma caudomaculata | 89990 |
| Tilapia caudomarginata Boulenger, 1916 | Sarotherodon caudomarginatus | 2 |
| Lamprologus caudopunctatus Poll, 1978 | Neolamprologus caudopunctatus | 5667 |
| Nanochromis cavalliensis Thys van den Audenaerde & Loiselle, 1971 | Chromidotilapia cavalliensis | 5657 |
| Paratilapia cavifrons Hilgendorf, 1888 | Haplochromis cavifrons | 4983 |
| Crenicichla celidochilus Casciotta, 1987 | Crenicichla celidochilus | 36377 |
| Teleocichla centisquama Zuanon & Sazima, 2002 | Teleocichla centisquama | 46528 |
| Cichlasoma centrale Meek, 1906 | Amphilophus trimaculatus | 7335 |
| Heros centralis Holmberg, 1891 | Cichlasoma dimerus | 36377 |
| Uarus centrarchoides Cope, 1872 | Heros efasciatus | 36377 |
| Heros centrarchus Gill, 1877 | Archocentrus centrarchus | 36377 |
| Teleocichla centrarchus Kullander, 1988 | Teleocichla centrarchus | 36377 |
| Leptochromis centropomoides Bailey & Stewart, 1977 | Baileychromis centropomoides | 5604 |
| Haplochromis centropristoides Nichols & LaMonte, 1931 | Astatotilapia calliptera | 4983 |
| Paratilapia cerasogaster Boulenger, 1899 | Rubricatochromis cerasogaster | 5644 |
| Tilapia cessiana Thys van den Audenaerde, 1968 | Heterotilapia cessiana | 93285 |
| Acharnes chacoensis Holmberg, 1891 | Crenicichla semifasciata | 36377 |
| Cichlasoma champotonis Hubbs, 1936 | Thorichthys helleri | 36377 |
| Amphilophus chancho Stauffer, McCrary & Black, 2008 | Amphilophus chancho | 75014 |
| Chromis chapmanii Castelnau, 1861 | Oreochromis macrochir | |
| Mazarunia charadrica López-Fernández, Taphorn B. & Liverpool, 2012 | Mazarunia charadrica | 91746 |
| Australoheros charrua Říčan & Kullander, 2008 | Australoheros charrua | 74689 |
| Gymnogeophagus che Casciotta, Gómez & Toresanni, 2000 | Gymnogeophagus che | 36377 |
| Mylochromis chekopae Turner & Howarth, 2001 | Mylochromis chekopae | 41276 |
| Cryptoheros chetumalensis Schmitter-Soto, 2007 | Cryptoheros chetumalensis | 74403 |
| Crenicichla chicha Varella, Kullander & Lima, 2012 | Crenicichla chicha | 91069 |
| Placidochromis chilolae Hanssens, 2004 | Placidochromis chilolae | 55898 |
| Paratilapia chilotes Boulenger, 1911 | Haplochromis chilotes | 4983 |
| Cynotilapia chilundu Li, Konings & Stauffer, 2016 | Cynotilapia chilundu | 119465 |
| Aequidens chimantanus Inger, 1956 | Aequidens chimantanus | 36377 |
| Tahuantinsuyoa chipi Kullander, 1991 | Tahuantinsuyoa chipi | 36377 |
| Melanochromis chipokae Johnson, 1975 | Melanochromis chipokae | 5663 |
| Labeotropheus chirangali Pauers & Phiri, 2023 | Labeotropheus chirangali | 128773 |
| Labidochromis chisumulae Lewis, 1982 | Labidochromis chisumulae | 5653 |
| Neolamprologus chitamwebwai Verburg & Bills, 2007 | Neolamprologus chitamwebwai | 74422 |
| Copadichromis chizumuluensis Stauffer & Konings, 2006 | Copadichromis chizumuluensis | 57549 |
| Haplochromis chlorochrous Greenwood & Gee, 1969 | Haplochromis chlorochrous | 4983 |
| Labeotropheus chlorosiglos Pauers, 2016 | Labeotropheus chlorosiglos | 111073 |
| Aristochromis christyi Trewavas, 1935 | Aristochromis christyi | 5600 |
| Lamprologus christyi Trewavas & Poll, 1952 | Neolamprologus christyi | 5667 |
| Lethrinops christyi Trewavas, 1931 | Lethrinops christyi | 4985 |
| Limnochromis christyi Trewavas, 1953 | Greenwoodochromis christyi | 5641 |
| Tilapia christyi (non Boulenger, 1915) | Oreochromis upembae | 5166 |
| Tilapia christyi Boulenger, 1915 | Coptodon rendalli | 88 |
| Tilapia christyi (non Boulenger, 1915) | Coptodon zillii | 5163 |
| Tilapia christyi (non Boulenger, 1915) | Coptodon congica | 5163 |
| Haplochromis chromogynos Greenwood, 1959 | Haplochromis chromogynos | 4983 |
| Haplochromis chrysogaster Trewavas, 1935 | Naevochromis chrysogaster | 267 |
| Haplochromis chrysogynaion van Oijen, 1991 | Haplochromis chrysogynaion | 26282 |
| Metriaclima chrysomallos Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia chrysomallos | 27596 |
| Paratilapia chrysonota Boulenger, 1908 | Copadichromis chrysonotus | 267 |
| Petrotilapia chrysos Stauffer & van Snik, 1996 | Petrotilapia chrysos | 31520 |
| Tilapia chungruruensis (non Ahl, 1924) | Oreochromis lidole | 2 |
| Tilapia chungruruensis Ahl, 1924 | Oreochromis chungruruensis | 5166 |
| Crenicichla cincta Regan, 1905 | Crenicichla cincta | 9088 |
| Haplochromis cinctus Greenwood & Gee, 1969 | Haplochromis cinctus | 4983 |
| Teleocichla cinderella Kullander, 1988 | Teleocichla cinderella | 36377 |
| Paratilapia cinerea Boulenger, 1906 | Haplochromis cinereus | 4983 |
| Apistogramma cinilabra Römer, Duponchelle, Diaz, Davilla, Sirvas, Catchay & Renno, 2011 | Apistogramma cinilabra | 86747 |
| Heros citrinellus Günther, 1864 | Amphilophus citrinellus | 36377 |
| Crenicichla clancularia Ploeg, 1991 | Crenicichla semicincta | 36377 |
| Haplochromis cnester Witte & Witte-Maas, 1981 | Haplochromis cnester | 4983 |
| Amatitlania coatepeque Schmitter-Soto, 2007 | Amatitlania coatepeque | 74403 |
| Paratilapia codringtonii Boulenger, 1908 | Sargochromis codringtonii | 5693 |
| Chromis coeruleomaculatus Rochebrune, 1880 | Coptodon zillii | 5163 |
| Acara coeruleopunctata Kner, 1863 | Andinoacara coeruleopunctatus | 36377 |
| Theraps coeruleus Stawikowski & Werner, 1987 | Rheoheros coeruleus | 104176 |
| Tilapia coffea Thys van den Audenaerde, 1970 | Coptodon coffea | 93285 |
| Acara cognatus Heckel, 1840 | Acaronia nassa | 9088 |
| Cyprichromis coloratus Takahashi & Hori, 2006 | Cyprichromis coloratus | 57033 |
| Heterogramma commbrae Regan, 1906 | Apistogramma commbrae | 36377 |
| Placidochromis communis Hanssens, 2004 | Placidochromis communis | 55898 |
| Haplochromis commutabilis Schraml, 2004 | Haplochromis commutabilis | 52362 |
| Crenicichla compressiceps Ploeg, 1986 | Crenicichla compressiceps | 36377 |
| Lamprologus compressiceps (non Boulenger, 1898) | Altolamprologus calvus | 5598 |
| Lamprologus compressiceps Boulenger, 1898 | Altolamprologus compressiceps | 5598 |
| Paratilapia compressiceps Boulenger, 1908 | Dimidiochromis compressiceps | 5627 |
| Acara compressus Cope, 1872 | Astronotus ocellatus | 36377 |
| Haplochromis concilians Vranken, Van Steenberge & Snoeks, 2020 | Haplochromis concilians | 126074 |
| Pelmatochromis congicus Boulenger, 1897 | Pterochromis congicus | 5685 |
| Lamprologus congoensis Schilthuis, 1891 | Lamprologus congoensis | 5654 |
| Benitochromis conjunctus Lamboj, 2001 | Benitochromis conjunctus | 39874 |
| Copadichromis conophoros Stauffer, LoVullo & McKaye, 1993 | Mchenga conophoros | 57549 |
| Nanochromis consortus Roberts & Stewart, 1976 | Nanochromis consortus | 5666 |
| Gymnogeophagus constellatus Malabarba, Malabarba & Reis, 2015 | Gymnogeophagus constellatus | 118066 |
| Crenicichla coppenamensis Ploeg, 1987 | Crenicichla coppenamensis | 26372 |
| Haplochromis coprologus Niemantsverdriet & Witte, 2010 | Haplochromis coprologus | 85523 |
| Paratilapia corbali Boulenger, 1913 | Pelmatochromis buettikoferi | 7378 |
| Bujurquina cordemadi Kullander, 1986 | Bujurquina cordemadi | 9088 |
| Etroplus coruchi Cuvier, 1830 | Pseudetroplus maculatus | 41236 |
| Heterogramma corumbae Eigenmann & Ward, 1907 | Apistogramma commbrae | 36377 |
| Heros coryphaenoides Heckel, 1840 | Hypselecara coryphaenoides | 36377 |
| Heros coryphaeus Heckel, 1840 | Heros spurius | 36377 |
| Haplochromis coulteri Bell-Cross, 1975 | Sargochromis coulteri | 5693 |
| Melanochromis crabro Ribbink & Lewis, 1982 | Pseudotropheus crabro | 5684 |
| Acara crassa Steindachner, 1875 | Hypselecara temporalis | 9088 |
| Tilapia crassa Pellegrin, 1903 | Congolapia crassa | 92878 |
| Geophagus crassilabris Steindachner, 1876 | Geophagus crassilabris | 36377 |
| Haplochromis crassilabris Boulenger, 1906 | Haplochromis crassilabris | 4983 |
| Haplochromis crassilabris (non Boulenger, 1906) | Haplochromis plagiodon | 4983 |
| Acara crassipinnis Heckel, 1840 | Astronotus crassipinnis | 36377 |
| Tilapia crassispina Arambourg, 1948 | Oreochromis niloticus | 5166 |
| Lamprologus crassus Brichard, 1989 | Neolamprologus crassus | 5667 |
| Haplochromis crebridens Snoeks, de Vos, Coenen & Thys van den Audenaerde, 1990 | Haplochromis crebridens | 4983 |
| Hemichromis cristatus Loiselle, 1979 | Rubricatochromis bimaculatus | 7378 |
| Geophagus crocatus Hauser & López-Fernández, 2013 | Geophagus crocatus | 95093 |
| Haplochromis crocopeplus Greenwood & Barel, 1978 | Haplochromis crocopeplus | 4983 |
| Haplochromis cronus Greenwood, 1959 | Haplochromis cronus | 4983 |
| Apistogramma cruzi Kullander, 1986 | Apistogramma cruzi | 9088 |
| Haplochromis cryptodon Greenwood, 1959 | Haplochromis cryptodon | 4983 |
| Haplochromis cryptogramma Greenwood & Gee, 1969 | Haplochromis cryptogramma | 4983 |
| Serranochromis cuanza Stauffer, Bills & Skelton, 2021 | Serranochromis cuanza | 123822 |
| Acara cubensis Heckel, 1864 | Nandopsis tetracanthus | 7335 |
| Lamprologus cunningtoni Boulenger, 1906 | Neolamprologus cunningtoni | 5655 |
| Lamprologus cunningtoni nyassae Borodin, 1936 | Lepidiolamprologus elongatus | 5655 |
| Geophagus cupido Heckel, 1840 | Biotodoma cupido | 36377 |
| Acara curviceps Ahl, 1923 | Laetacara curviceps | 36377 |
| Haplochromis curvidens Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis curvidens | 126312 |
| Ptychochromis curvidens Stiassny & Sparks, 2006 | Ptychochromis curvidens | 57663 |
| Simochromis curvifrons Poll, 1942 | Pseudosimochromis curvifrons | 5683 |
| Labeotropheus curvirostris Ahl, 1926 | Labeotropheus fuelleborni | 5652 |
| Cichlasoma cutteri (non Fowler, 1932) | Cryptoheros spilurus | 74403 |
| Cichlasoma cutteri Fowler, 1932 | Cryptoheros cutteri | 74403 |
| Guianacara cuyunii López-Fernández, Taphorn Baechle & Kullander, 2006 | Guianacara cuyunii | 57436 |
| Melanochromis cyaneorhabdos Bowers & Stauffer, 1997 | Pseudotropheus cyaneorhabdos | 89864 |
| Haplochromis cyaneus Trewavas, 1935 | Copadichromis cyaneus | 267 |
| Haplochromis cyaneus Seehausen, Bouton & Zwennes, 1998 | Haplochromis cyaneus | 27668 |
| Pseudotropheus cyaneus Stauffer, 1988 | Chindongo cyaneus | 119465 |
| Copadichromis cyanocephalus Stauffer & Konings, 2006 | Copadichromis cyanocephalus | 57549 |
| Herichthys cyanoguttatus Baird & Girard, 1854 | Herichthys cyanoguttatus | 36377 |
| Crenicichla cyanonotus Cope, 1870 | Crenicichla cyanonotus | 9088 |
| Chalinochromis cyanophleps Kullander, Karlsson, Karlsson & Norén, 2014 | Chalinochromis cyanophleps | 95611 |
| Centrarchus cyanopterus Jardine & Schomburgk, 1843 | Chaetobranchus flavescens | 26372 |
| Gymnogeophagus cyanopterus Miranda Ribeiro, 1918 | Gymnogeophagus balzanii | 36377 |
| Eretmodus cyanostictus Boulenger, 1898 | Eretmodus cyanostictus | 5633 |
| Parapetenia cyanostigma Hernandez-Rolon, 1990 | Herichthys cyanoguttatus | 36377 |
| Centrarchus cychla Jardine, 1843 | Hoplarchus psittacus | 36377 |
| Copadichromis cyclicos Stauffer, LoVullo & McKaye, 1993 | Mchenga cyclicos | 57549 |
| Crenicichla cyclostoma Ploeg, 1986 | Crenicichla cyclostoma | 36377 |
| Lamprologus cylindricus Forsberg, 1985 | Neolamprologus cylindricus | 5667 |
| Neolamprologus cylindricus Staeck & Seegers, 1986 | Neolamprologus cylindricus | 56628 |
| Metriaclima cyneusmarginatus Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia cyneusmarginata | 27596 |
| Lethrinops cyrtonotus Trewavas, 1931 | Taeniolethrinops cyrtonotus | 267 |
| Guianacara dacrya Arbour & López-Fernández, 2011 | Guianacara dacrya | 86674 |
| Geophagus daemon Heckel, 1840 | Satanoperca daemon | 36377 |
| Tilapia dageti Thys van den Audenaerde, 1971 | Coptodon dageti | 93285 |
| Paretroplus dambabe Sparks, 2002 | Paretroplus dambabe | 117174 |
| Paretroplus dami (non Bleeker, 1868) | Paretroplus polyactis | 5675 |
| Paretroplus damii Bleeker, 1868 | Paretroplus damii | 5675 |
| Oreochromis danconai Di Caporiacco, 1948 | Oreochromis spilurus | 5166 |
| Tilapia dardennii Boulenger, 1899 | Limnotilapia dardennii | 5660 |
| Pelmatochromis darlingi Boulenger, 1911 | Pharyngochromis darlingi | 5596 |
| Tilapia deckerti Thys van den Audenaerde, 1967 | Coptodon deckerti | 93285 |
| Iodotropheus declivitas Stauffer, 1994 | Iodotropheus declivitas | 26709 |
| Haplochromis decorus Trewavas, 1935 | Otopharynx decorus | 267 |
| Haplochromis decticostoma Greenwood & Gee, 1969 | Haplochromis decticostoma | 4983 |
| Platytaeniodus degeni Boulenger, 1906 | Haplochromis degeni | 12750 |
| Protomelas dejunctus Stauffer, 1993 | Protomelas dejunctus | 26731 |
| Pseudotropheus demasoni Konings, 1994 | Chindongo demasoni | 119465 |
| Paratilapia demeusii Boulenger, 1899 | Thoracochromis demeusii | 4983 |
| Diplotaxodon dentatus Stauffer & Konings, 2021 | Diplotaxodon dentatus | 123828 |
| Haplochromis dentex Regan, 1922 | Haplochromis dentex | 4983 |
| Heros deppii Heckel, 1840 | Herichthys deppii | 36377 |
| Teleogramma depressa Roberts & Stewart, 1976 | Teleogramma depressa | 5703 |
| Ectodus descampsii (non Boulenger, 1898) | Lestradea perspicax | 5655 |
| Ectodus descampsii (non Boulenger, 1898) | Cardiopharynx schoutedeni | 5609 |
| Ectodus descampsii Boulenger, 1898 | Ectodus descampsii | 5631 |
| Ectodus descampsii ornatipinnis Borodin, 1936 | Callochromis melanostigma | 5608 |
| Paratilapia deschauenseei Fowler, 1931 | Sargochromis carlottae | 5693 |
| Tilapia deschauenseei Fowler, 1931 | Tilapia sparrmanii | 5163 |
| Sparus desfontainii Lacepède, 1802 | Astatotilapia desfontainii | 4983 |
| Hemichromis desguezii Rochebrune, 1880 | Hemichromis fasciatus | 123791 |
| Neolamprologus devosi Schelly, Stiassny & Seegers, 2003 | Neolamprologus devosi | 50569 |
| Paratilapia dewindti Boulenger, 1899 | Aulonocranus dewindti | 5603 |
| Limnochromis dhanisi Poll, 1949 | Tangachromis dhanisi | 5701 |
| Lamprologus dhonti Boulenger, 1919 | Telmatochromis dhonti | 5704 |
| Acara diadema Heckel, 1840 | Aequidens diadema | 9088 |
| Chromis diagramma Günther, 1894 | Simochromis diagramma | 5694 |
| Melanochromis dialeptos Bowers & Stauffer, 1997 | Melanochromis dialeptos | 26078 |
| Geophagus diamantinensis Mattos, Costa & Santos, 2015 | Geophagus diamantinensis | 118113 |
| Biotoecus dicentrarchus Kullander, 1989 | Biotoecus dicentrarchus | 36377 |
| Haplochromis dichrourus (non Regan, 1922) | Haplochromis pyrrhopteryx | 42172 |
| Haplochromis dichrourus Regan, 1922 | Haplochromis dichrourus | 4983 |
| Julidochromis dickfeldi Staeck, 1975 | Julidochromis dickfeldi | 5651 |
| Geophagus dicrozoster López-Fernández & Taphorn, 2004 | Geophagus dicrozoster | 52005 |
| Konia dikume Trewavas, 1972 | Konia dikume | 4984 |
| Acara dimerus Heckel, 1840 | Cichlasoma dimerus | 36377 |
| Hemichromis dimidiatus Günther, 1864 | Dimidiochromis dimidiatus | 267 |
| Pelmatochromis dimidiatus Pellegrin, 1900 | Congochromis dimidiatus | 5666 |
| Danakilia dinicolai Stiassny, De Marchi & Lamboj, 2010 | Danakilia dinicolai | 85754 |
| Copadichromis diplostigma Stauffer & Konings, 2006 | Copadichromis diplostigma | 57549 |
| Apistogramma diplotaenia Kullander, 1987 | Apistogramma diplotaenia | 36377 |
| Haplochromis diplotaenia Regan & Trewavas, 1928 | Haplochromis diplotaenia | 4983 |
| Cichlasoma diquis Bussing, 1974 | Cribroheros diquis | 114771 |
| Chromis discolor Günther, 1903 | Coptodon discolor | 5163 |
| Symphysodon discus Heckel, 1840 | Symphysodon discus | 36377 |
| Symphysodon discus tarzoo Lyons, 1959 | Symphysodon tarzoo | 57706 |
| Symphysodon discus tarzoo (non Lyons, 1959) | Symphysodon aequifasciatus | 57706 |
| Symphysodon discus var. aequifasciata Pellegrin, 1904 | Symphysodon aequifasciatus | 91098 |
| Symphysodon discus willischwartzi Burgess, 1981 | Symphysodon discus | 33249 |
| Haplochromis dolichorhynchus Greenwood & Gee, 1969 | Haplochromis dolichorhynchus | 4983 |
| Tilapia dolloi Boulenger, 1899 | Sarotherodon nigripinnis | 72448 |
| Haplochromis dolorosus Trewavas, 1933 | Haplochromis dolorosus | 4983 |
| Placidochromis domirae Hanssens, 2004 | Placidochromis domirae | 55898 |
| Paratilapia dorsalis Pellegrin, 1902 | Pelmatochromis nigrofasciatus | 5676 |
| Cichlasoma dorsatum Meek, 1907 | Amphilophus labiatus | 7335 |
| Crenicichla dorsocellata Haseman, 1911 | Crenicichla lacustris | 36377 |
| Heros dovii Günther, 1864 | Parachromis dovii | 36377 |
| Pelvicachromis drachenfelsi Lamboj, Bartel & Dell'Ampio, 2014 | Pelvicachromis drachenfelsi | 97630 |
| Tilapia druryi Gilchrist & Thompson, 1917 | Coptodon rendalli | 88 |
| Tilapia dubia Lönnberg, 1904 | Pelmatolapia mariae | 5163 |
| Tilapia dubia (non Lönnberg, 1904) | Pelmatolapia cabrae | 5163 |
| Tropheus duboisi Marlier, 1959 | Tropheus duboisi | 5713 |
| Chromis dumerilii Steindachner, 1864 | Oreochromis mossambicus | 2 |
| Plataxoides dumerilii Castelnau, 1855 | Pterophyllum scalare | 9088 |
| Geophagus duodecimspinosus Boulenger, 1895 | Gymnogeophagus balzanii | 36377 |
| Aequidens duopunctata Haseman, 1911 | Aequidens pallidus | 36377 |
| Chilochromis duponti Boulenger, 1902 | Chilochromis duponti | 5614 |
| Perissodus eccentricus Liem & Stewart, 1976 | Perissodus eccentricus | 5678 |
| Diplotaxodon ecclesi Burgess & Axelrod, 1973 | Diplotaxodon ecclesi | 5628 |
| Placidochromis ecclesi Hanssens, 2004 | Placidochromis ecclesi | 55898 |
| Crenicichla edithae Ploeg, 1991 | Crenicichla lepidota | 36377 |
| Schubotzia eduardiana Boulenger, 1914 | Haplochromis eduardianus | 12750 |
| Tilapia eduardiana (non Boulenger, 1912) | Oreochromis esculentus | 5166 |
| Tilapia eduardiana Boulenger, 1912 | Oreochromis niloticus | 5166 |
| Haplochromis eduardii Regan, 1921 | Haplochromis eduardii | 4983 |
| Heros efasciatus Heckel, 1840 | Heros efasciatus | 36377 |
| Mesonauta egregius Kullander & Silfvergrip, 1991 | Mesonauta egregius | 36377 |
| Cichlasoma eigenmanni Meek, 1902 | Paraneetroplus nebulifer | 36377 |
| Pterophyllum eimekei Ahl, 1928 | Pterophyllum scalare | 9088 |
| Tilapia eisentrauti Trewavas, 1962 | Konia eisentrauti | 4984 |
| Tilapia eisentrauti (non Trewavas, 1962) | Konia dikume | 53940 |
| Tilapia ejagham Dunz & Schliewen, 2010 | Coptodon ejagham | 93285 |
| Melanochromis elastodema Bowers & Stauffer, 1997 | Pseudotropheus interruptus | 93956 |
| Plecodus elaviae Poll, 1949 | Plecodus elaviae | 5681 |
| Haplochromis electra Burgess, 1979 | Placidochromis electra | 4994 |
| Crenicara elegans Steindachner, 1875 | Crenicara punctulata | 9088 |
| Crenicichla elegans Steindachner, 1881 | Crenicichla reticulata | 36377 |
| Haplochromis elegans (non Trewavas, 1933) | Haplochromis limax | 4983 |
| Haplochromis elegans (non Trewavas, 1933) | Haplochromis angustifrons | 4983 |
| Haplochromis elegans Trewavas, 1933 | Haplochromis elegans | 4983 |
| Pseudotropheus elegans Trewavas, 1935 | Pseudotropheus elegans | 119458 |
| Apistogramma eleutheria Varella & Britzke, 2016 | Apistogramma eleutheria | 129298 |
| Apistogramma elizabethae Kullander, 1980 | Apistogramma elizabethae | 36377 |
| Astatotilapia ellenbergeri Pellegrin, 1920 | Sargochromis carlottae | 5693 |
| Paratilapia ellenbergeri Gilchrist & Thompson, 1917 | Serranochromis macrocephalus | 5693 |
| Tilapia ellenbergeri Gilchrist & Thompson, 1917 | Pseudocrenilabrus philander | 5682 |
| Thorichthys ellioti Meek, 1904 | Thorichthys maculipinnis | 114771 |
| Parananochromis elobatus Lamboj, 2014 | Parananochromis elobatus | 97361 |
| Chromidotilapia elongata Lamboj, 1999 | Chromidotilapia elongata | 47111 |
| Chromichthys elongatus Guichenot, 1861 | Hemichromis elongatus | 5644 |
| Julidochromis elongatus Steindachner, 1909 | Lamprologus callipterus | 5654 |
| Lamprologus elongatus Boulenger, 1898 | Neolamprologus brichardi | 5667 |
| Lamprologus elongatus Boulenger, 1898 | Lepidiolamprologus elongatus | 5655 |
| Placidochromis elongatus Hanssens, 2004 | Placidochromis elongatus | 55898 |
| Pseudotropheus elongatus (non Fryer, 1956) | Chindongo flavus | 5684 |
| Pseudotropheus elongatus (non Fryer, 1956) | Chindongo ater | 5684 |
| Pseudotropheus elongatus Fryer, 1956 | Chindongo elongatus | 119465 |
| Pseudotropheus elongatus (non Fryer, 1956) | Chindongo cyaneus | 5684 |
| Steatocranus elongatus Nichols & LaMonte, 1934 | Steatocranus rouxi | 5696 |
| Steatocranus elongatus (non Nichols & La Monte, 1934) | Steatocranus glaber | 5696 |
| Steatocranus elongatus (non Nichols & La Monte, 1934) | Steatocranus gibbiceps | 5676 |
| Tylochromis elongatus Stiassny, 1989 | Tylochromis elongatus | 5714 |
| Thysochromis emili Walsh, Lamboj & Stiassny, 2019 | Thysochromis emili | 122428 |
| Metriaclima emmiltos Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia emmiltos | 27596 |
| Crenicichla empheres Lucena, 2007 | Crenicichla empheres | 75870 |
| Haplochromis empodisma Greenwood, 1960 | Haplochromis empodisma | 4983 |
| Haplochromis engystoma Trewavas, 1933 | Haplochromis engystoma | 4983 |
| Mylochromis ensatus Turner & Howarth, 2001 | Mylochromis ensatus | 41276 |
| Aequidens epae Kullander, 1995 | Aequidens epae | 26647 |
| Haplochromis epichorialis Trewavas, 1935 | Mylochromis epichorialis | 267 |
| Apistogramma eremnopyge Ready & Kullander, 2004 | Apistogramma eremnopyge | 53325 |
| Haplochromis ericotaenia Regan, 1922 | Mylochromis ericotaenia | 267 |
| Ptychochromis ernestmagnusi Sparks & Stiassny, 2010 | Ptychochromis ernestmagnusi | 83427 |
| Haplochromis erutus Vranken, Van Steenberge & Snoeks, 2020 | Haplochromis erutus | 126074 |
| Heros erythraeus Günther, 1867 | Amphilophus labiatus | 36377 |
| Haplochromis erythrocephalus Greenwood & Gee, 1969 | Haplochromis erythrocephalus | 4983 |
| Spathodus erythrodon Boulenger, 1900 | Spathodus erythrodon | 5695 |
| Haplochromis erythromaculatus De Vos, Snoeks & Thys van den Audenaerde, 1991 | Haplochromis erythromaculatus | 4983 |
| Apistogramma erythrura Staeck & Schindler, 2008 | Apistogramma erythrura | 79632 |
| Tilapia esculenta Graham, 1928 | Oreochromis esculentus | 2 |
| Paratilapia esox Boulenger, 1908 | Rhamphochromis esox | 5684 |
| Pseudotropheus estherae Konings, 1995 | Maylandia estherae | 27596 |
| Haplochromis estor Regan, 1929 | Haplochromis estor | 4983 |
| Aulonocara ethelwynnae Meyer, Riehl & Zetzsche, 1987 | Aulonocara ethelwynnae | 4975 |
| Gobiocichla ethelwynnae Roberts, 1982 | Gobiocichla ethelwynnae | 93285 |
| Haplochromis euchilus Trewavas, 1935 | Cheilochromis euchilus | 267 |
| Haplochromis eucinostomus Regan, 1922 | Mchenga eucinostomus | 267 |
| Apistogramma eunotus Kullander, 1981 | Apistogramma eunotus | 9088 |
| Bujurquina eurhinus Kullander, 1986 | Bujurquina eurhinus | 9088 |
| Haplochromis eutaenia Regan & Trewavas, 1928 | Haplochromis eutaenia | 4983 |
| Docimodus evelynae Eccles & Lewis, 1976 | Docimodus evelynae | 5629 |
| Cichlasoma evermanni Meek, 1904 | Astatheros macracanthus | 36377 |
| Melanochromis exasperatus Burgess, 1976 | Labidochromis joanjohnsonae | 5663 |
| Haplochromis exspectatus Schraml, 2004 | Haplochromis exspectatus | 52362 |
| Pelmatochromis exsul Trewavas, 1933 | Rubricatochromis exsul | 55985 |
| Pelmatochromis exsul (non Trewavas, 1933) | Rubricatochromis letourneuxi | 5644 |
| Chromis facetus (non Jenyns, 1842) | Australoheros acaroides | 85206 |
| Chromis facetus Jenyns, 1842 | Australoheros facetus | 74689 |
| Chromis faidherbii Rochebrune, 1880 | Coptodon zillii | 5163 |
| Pseudotropheus fainzilberi Staeck, 1976 | Maylandia fainzilberi | 86864 |
| Haplochromis falcatus Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis falcatus | 126312 |
| Lamprologus falcicula Brichard, 1989 | Neolamprologus falcicula | 5667 |
| Petrochromis famula Matthes & Trewavas, 1960 | Petrochromis famula | 5679 |
| Chromys fasciata Castelnau, 1855 | Heros efasciatus | 36377 |
| Cychla fasciata Jardine, 1843 | Crenicichla johanna | 26135 |
| Tilapia fasciata (non Perugia, 1892) | Haplochromis polli | 4983 |
| Tilapia fasciata tanganaicae Borodin, 1936 | Shuja horei | 127080 |
| Bathybates fasciatus Boulenger, 1901 | Bathybates fasciatus | 5605 |
| Chromis fasciatus Perugia, 1892 | Thoracochromis fasciatus | 4983 |
| Hemichromis fasciatus Peters, 1857 | Hemichromis fasciatus | 123791 |
| Hemichromis fasciatus (non Peters, 1857) | Hemichromis elongatus | 5644 |
| Lamprologus fasciatus Boulenger, 1898 | Neolamprologus fasciatus | 5667 |
| Lethrinops fasciatus Ahl, 1926 | Taeniolethrinops praeorbitalis | 267 |
| Pomotis fasciatus Jardine, 1843 | Uaru amphiacanthoides | 36377 |
| Petrochromis fasciolatus Boulenger, 1914 | Petrochromis fasciolatus | 5679 |
| Apistogramma feconat Römer, Soares, Dávila, Duponchelle, Renno & Hahn, 2015 | Apistogramma feconat | 104987 |
| Chromis fenestrata Günther, 1860 | Vieja fenestrata | 36377 |
| Haplochromis fenestratus Trewavas, 1935 | Protomelas fenestratus | 267 |
| Uaru fernandezyepezi Stawikowski, 1989 | Uaru fernandezyepezi | 36377 |
| Bathybates ferox (non Boulenger, 1898) | Bathybates fasciatus | 5605 |
| Bathybates ferox (non Boulenger, 1898) | Bathybates vittatus | 5605 |
| Bathybates ferox (non Boulenger, 1898) | Bathybates minor | 5605 |
| Bathybates ferox Boulenger, 1898 | Bathybates ferox | 5605 |
| Rhamphochromis ferox Regan, 1922 | Rhamphochromis ferox | 5689 |
| Heros festae Boulenger, 1899 | Mesoheros festae | 36377 |
| Haplochromis festivus Trewavas, 1935 | Eclectochromis ornatus | 55954 |
| Heros festivus Heckel, 1840 | Mesonauta festivus | 36377 |
| Crenicara filamentosa Ladiges, 1958 | Dicrossus filamentosus | 36377 |
| Sparus filamentosus Gronow, 1854 | Cichlasoma bimaculatum | 36377 |
| Lamprologus finalimus Nichols & La Monte, 1931 | Lamprologus finalimus | 5654 |
| Chromidotilapia finleyi Trewavas, 1974 | Benitochromis finleyi | 39874 |
| Haplochromis fischeri Seegers, 2008 | Haplochromis fischeri | 79882 |
| Apistogramma flabellicauda Mesa S. & Lasso, 2011 | Apistogramma flabellicauda | 89990 |
| Laetacara flamannellus Ottoni, Bragança, Amorim & Gama, 2012 | Laetacara flamannellus | 91058 |
| Tilapia flava Stiassny, Schliewen & Dominey, 1992 | Coptodon flavus | 93285 |
| Amphilophus flaveolus Stauffer, McCrary & Black, 2008 | Amphilophus flaveolus | 75014 |
| Chaetobranchus flavescens Heckel, 1840 | Chaetobranchus flavescens | 36377 |
| Metriaclima flavicauda Li, Konings & Stauffer, 2016 | Maylandia flavicauda | 119465 |
| Metriaclima flavifemina Konings & Stauffer, 2006 | Maylandia flavifemina | 76849 |
| Labidochromis flavigulis Lewis, 1982 | Labidochromis flavigulis | 5653 |
| Chromis flaviijosephi Lortet, 1883 | Astatotilapia flaviijosephi | 4983 |
| Acara flavilabris Cope, 1870 | Laetacara flavilabris | 9088 |
| Haplochromis flavimanus Iles, 1960 | Mchenga flavimanus | 4979 |
| Apistogramma flavipedunculata Varella & Britzke, 2016 | Apistogramma flavipedunculata | 129298 |
| Pelmatochromis flavipinnis Boulenger, 1906 | Haplochromis flavipinnis | 4983 |
| Xenotilapia flavipinnis Poll, 1985 | Xenotilapia flavipinnis | 50515 |
| Chetia flaviventris Trewavas, 1961 | Chetia flaviventris | 5613 |
| Petrotilapia flaviventris Lundeba, Stauffer & Konings, 2011 | Petrotilapia flaviventris | 87181 |
| Cychla flavomaculata Jardine & Schomburgk, 1843 | Cichla temensis | 36377 |
| Tilapia flavomarginata (non Boulenger, 1899) | Sarotherodon mvogoi | 4999 |
| Tilapia flavomarginata (non Boulenger, 1899) | Oreochromis angolensis | 2 |
| Tilapia flavomarginata Boulenger, 1899 | Oreochromis schwebischi | 2 |
| Haplochromis flavus Seehausen, Zwennes & Lippitsch, 1998 | Haplochromis flavus | 27668 |
| Pseudotropheus flavus Stauffer, 1988 | Chindongo flavus | 119465 |
| Neetroplus fluviatilis Meek, 1912 | Hypsophrys nematopus | 36377 |
| Ectodus foae Vaillant, 1899 | Cyathopharynx furcifer | 5620 |
| Dicrossus foirni Römer, Hahn & Vergara, 2010 | Dicrossus foirni | 85095 |
| Haplochromis formosus Trewavas, 1935 | Mylochromis formosus | 267 |
| Australoheros forquilha (non Říčan & Kullander, 2008) | Australoheros ykeregua | 87600 |
| Australoheros forquilha Říčan & Kullander, 2008 | Australoheros forquilha | 74689 |
| Tilapia fossilis White, 1937 | Tilapia busumana | 5163 |
| Tilapia fouloni Boulenger, 1905 | Tilapia sparrmanii | 5163 |
| Tilapia franchettii Vinciguerra, 1931 | Danakilia franchettii | 5626 |
| Chromys frederici Castelnau, 1861 | Sargochromis greenwoodi | 5693 |
| Labidochromis freibergi Johnson, 1974 | Labidochromis freibergi | 5653 |
| Hemichromis frempongi Loiselle, 1979 | Hemichromis fasciatus | 123791 |
| Crenicichla frenata Gill, 1858 | Crenicichla frenata | 36377 |
| Acara freniferus Cope, 1872 | Laetacara flavilabris | 9088 |
| Heros friedrichsthalii Heckel, 1840 | Parachromis friedrichsthalii | 36377 |
| Amphilophus froebelii Agassiz, 1859 | Amphilophus labiatus | 13677 |
| Cichlasoma frontale Meek, 1909 | Talamancaheros underwoodi | 114771 |
| Paratilapia frontosa Boulenger, 1906 | Cyphotilapia frontosa | 5623 |
| Sciaenochromis fryeri Konings, 1993 | Sciaenochromis fryeri | 40899 |
| Haplochromis fuelleborni Ahl, 1926 | Dimidiochromis kiwinge | 267 |
| Labeotropheus fuelleborni Ahl, 1926 | Labeotropheus fuelleborni | 5652 |
| Tilapia fuelleborni Hilgendorf & Pappenheim, 1903 | Haplochromis fuelleborni | 27292 |
| Hemichromis fugax Payne & Trewavas, 1976 | Rubricatochromis bimaculatus | 52307 |
| Laetacara fulvipinnis Staeck & Schindler, 2007 | Laetacara fulvipinnis | 58749 |
| Crenicichla funebris Heckel, 1840 | Crenicichla lugubris | 26372 |
| Crenicichla funebris Heckel, 1840 | Crenicichla adspersa | 26135 |
| Lethrinops furcicauda Trewavas, 1931 | Taeniolethrinops furcicauda | 267 |
| Lamprologus furcifer Boulenger, 1898 | Neolamprologus furcifer | 5667 |
| Lethrinops furcifer Trewavas, 1931 | Lethrinops furcifer | 267 |
| Paratilapia furcifer Boulenger, 1898 | Cyathopharynx furcifer | 5620 |
| Pseudotropheus fuscoides Fryer, 1956 | Pseudotropheus fuscoides | 5684 |
| Chromis fuscomaculatus Guichenot, 1853 | Nandopsis tetracanthus | 36377 |
| Haplochromis fuscotaeniatus Regan, 1922 | Nimbochromis fuscotaeniatus | 267 |
| Haplochromis fuscus Regan, 1925 | Haplochromis fuscus | 4983 |
| Lamprologus fuscus Pellegrin, 1927 | Lamprologus congoensis | 5654 |
| Placidochromis fuscus Hanssens, 2004 | Placidochromis fuscus | 55898 |
| Pseudotropheus fuscus Trewavas, 1935 | Pseudotropheus fuscus | 5684 |
| Tilapia fusiforme Dunz & Schliewen, 2010 | Coptodon fusiforme | 93285 |
| Haplochromis fusiformis Greenwood & Gee, 1969 | Haplochromis fusiformis | 4983 |
| Cyclopharynx fwae Poll, 1948 | Cyclopharynx fwae | 5621 |
| Nanochromis gabonicus Trewavas, 1975 | Parananochromis gabonicus | 5673 |
| Cichlasoma gadovii Regan, 1905 | Vieja fenestrata | 7335 |
| Pseudotropheus galanos Stauffer & Kellogg, 2002 | Pseudotropheus galanos | 41512 |
| Sparus galilaeus Linnaeus, 1758 | Sarotherodon galilaeus | 2 |
| Crenicichla gaucho Lucena & Kullander, 1992 | Crenicichla gaucho | 26688 |
| Acara geayi Pellegrin, 1902 | Guianacara geayi | 36377 |
| Crenicichla geayi Pellegrin, 1903 | Crenicichla geayi | 36377 |
| Orthochromis gecki Schedel, Vreven, Katemo Manda, Abwe, Chocha Manda & Schliewen, 2018 | Orthochromis gecki | 122085 |
| Herichthys geddesi Regan, 1905 | Cichlasoma geddesi | 36377 |
| Copadichromis geertsi Konings, 1999 | Copadichromis geertsi | 47113 |
| Tilapia gefuensis Thys van den Audenaerde, 1964 | Coptodon rendalli | 5163 |
| Apistogramma geisleri Meinken, 1971 | Apistogramma geisleri | 36377 |
| Rocio gemmata Contreras-Balderas & Schmitter-Soto, 2007 | Rocio gemmata | 74403 |
| Petrotilapia genalutea Marsh, 1983 | Petrotilapia genalutea | 5597 |
| Pelmatochromis genisquamulatus Pellegrin, 1914 | Serranochromis macrocephalus | 5693 |
| Alticorpus geoffreyi Snoeks & Walapa, 2004 | Alticorpus geoffreyi | 55908 |
| Apistogramma gephyra Kullander, 1980 | Apistogramma gephyra | 36377 |
| Teleocichla gephyrogramma Kullander, 1988 | Teleocichla gephyrogramma | 34233 |
| Aequidens gerciliae Kullander, 1995 | Aequidens gerciliae | 26647 |
| Aulonocara gertrudae Konings, 1995 | Aulonocara gertrudae | 40898 |
| Paratilapia gestri Boulenger, 1911 | Haplochromis obesus | 4983 |
| Tilapia giardi Pellegrin, 1903 | Sargochromis giardi | 5693 |
| Cyphotilapia gibberosa Takahashi & Nakaya, 2003 | Cyphotilapia gibberosa | 52029 |
| Apistogramma gibbiceps Meinken, 1969 | Apistogramma gibbiceps | 36377 |
| Heros gibbiceps Steindachner, 1864 | Paraneetroplus gibbiceps | 36377 |
| Paratilapia gibbiceps Boulenger, 1911 | Sargochromis carlottae | 5693 |
| Steatocranus gibbiceps Boulenger, 1899 | Steatocranus gibbiceps | 5696 |
| Haplochromis gigas Ahl, 1926 | Buccochromis lepturus | 267 |
| Labidochromis gigas Lewis, 1982 | Labidochromis gigas | 5653 |
| Neochromis gigas Seehausen & Lippitsch, 1998 | Haplochromis gigas | 12750 |
| Hemichromis gigliolii Pfeffer, 1896 | Haplochromis gigliolii | 4983 |
| Haplochromis gilberti Greenwood & Gee, 1969 | Haplochromis gilberti | 4983 |
| Crenicichla gillmorlisi Kullander & Lucena, 2013 | Crenicichla gillmorlisi | 93325 |
| Tilapia girigan Lowe, 1955 | Oreochromis jipe | 52331 |
| Steatocranus glaber Roberts & Stewart, 1976 | Steatocranus glaber | 5696 |
| Dicrossus gladicauda Schindler & Staeck, 2008 | Dicrossus gladicauda | 76847 |
| Metriaclima glaucos Ciccotto, Konings & Stauffer, 2011 | Maylandia glaucos | 86409 |
| Haplochromis glaucus Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis glaucus | 126312 |
| Cichlasoma globosum Miller, 1907 | Vieja maculicauda | 7335 |
| Amphilophus globosus Geiger, McCrary & Stauffer, 2010 | Amphilophus globosus | 85056 |
| Heros godmanni Günther, 1862 | Chuco godmanni | 36377 |
| Heros goeldii Boulenger, 1897 | Hypselecara temporalis | 9088 |
| Haplochromis goldschmidti Witte, Westbroek & de Zeeuw, 2013 | Haplochromis goldschmidti | 92860 |
| Cichlasoma gordonsmithi Fowler, 1936 | Amphilophus trimaculatus | 36377 |
| Apistogramma gossei Kullander, 1982 | Apistogramma gossei | 36377 |
| Lethrinops gossei Burgess & Axelrod, 1973 | Lethrinops gossei | 4985 |
| Geophagus gottwaldi Schindler & Staeck, 2006 | Geophagus gottwaldi | 78437 |
| Haplochromis gowersii Trewavas, 1928 | Haplochromis gowersii | 4983 |
| Teleogramma gracile Boulenger, 1899 | Teleogramma gracile | 5703 |
| Haplochromis gracilicauda Regan, 1922 | Haplochromis longirostris | 4983 |
| Haplochromis gracilifur Vranken, Van Steenberge & Snoeks, 2019 | Haplochromis gracilifur | 127594 |
| Haplochromis gracilior Boulenger, 1914 | Haplochromis gracilior | 4983 |
| Haplochromis gracilis Trewavas, 1935 | Mylochromis gracilis | 5692 |
| Lamprologus gracilis Brichard, 1989 | Neolamprologus gracilis | 5667 |
| Perissodus gracilis Myers, 1936 | Perissodus microlepis | 5678 |
| Serranochromis gracilis Greenwood, 1984 | Chetia gracilis | 5693 |
| Tilapia grahami Boulenger, 1912 | Oreochromis grahami | 2 |
| Geophagus grammepareius Kullander & Taphorn, 1992 | Geophagus grammepareius | 57764 |
| Cichlasoma grammodes Taylor & Miller, 1980 | Chiapaheros grammodes | 114771 |
| Cichlasoma granadense Meek, 1907 | Amphilophus citrinellus | 13677 |
| Ptychochromis grandidieri Sauvage, 1882 | Ptychochromis grandidieri | 50642 |
| Ptychochromis grandidieri (non Sauvage, 1882) | Ptychochromoides betsileanus | 5687 |
| Tilapia grandoculis Boulenger, 1899 | Cyathopharynx furcifer | 5620 |
| Haplochromis granti Boulenger, 1906 | Haplochromis granti | 4983 |
| Bathybates graueri Steindachner, 1911 | Bathybates graueri | 5605 |
| Haplochromis graueri (non Boulenger, 1914) | Haplochromis nigroides | 4983 |
| Haplochromis graueri (non Boulenger, 1914) | Haplochromis adolphifrederici | 4983 |
| Haplochromis graueri Boulenger, 1914 | Haplochromis graueri | 4983 |
| Haplochromis graueri (non Boulenger, 1914) | Haplochromis gracilior | 4983 |
| Haplochromis graueri (non Boulenger, 1914) | Haplochromis astatodon | 4983 |
| Diplotaxodon greenwoodi Stauffer & McKaye, 1986 | Diplotaxodon greenwoodi | 5628 |
| Haplochromis greenwoodi Bell-Cross, 1975 | Sargochromis greenwoodi | 5693 |
| Neochromis greenwoodi Seehausen & Bouton, 1998 | Haplochromis greenwoodi | 12750 |
| Pseudotropheus greshakei Meyer & Förster, 1984 | Maylandia greshakei | 27596 |
| Acara gronovii Heckel, 1840 | Cichlasoma bimaculatum | 26372 |
| Aequidens guaporensis Haseman, 1911 | Aequidens viridis | 36377 |
| Australoheros guarani Říčan & Kullander, 2008 | Australoheros guarani | 74689 |
| Aulonocara guentheri Eccles, 1989 | Aulonocara guentheri | 4975 |
| Chromis guentheri Steindachner, 1864 | Oreochromis niloticus | 5166 |
| Cichlasoma guentheri Pellegrin, 1904 | Chuco microphthalmus | 7335 |
| Crenicichla guentheri Ploeg, 1991 | Crenicichla hemera | 36377 |
| Haplochromis guentheri Regan, 1922 | Mylochromis guentheri | 267 |
| Haplochromis guentheri (non Regan, 1922) | Mylochromis melanonotus | 4995 |
| Pelmatochromis guentheri Boulenger, 1896 | Tylochromis lateralis | 5714 |
| Acara guianensis Regan, 1905 | Krobia guianensis | 36377 |
| Tilapia guiarti Pellegrin, 1904 | Haplochromis guiarti | 4983 |
| Cichlasoma guija Hildebrand, 1934 | Astatheros macracanthus | 36377 |
| Tilapia guinasana Trewavas, 1936 | Tilapia guinasana | 93285 |
| Chromis guineensis Günther, 1862 | Coptodon guineensis | 5163 |
| Haligenes guineensis Bleeker, 1863 | Coptodon guineensis | 5163 |
| Parachromis gulosus Agassiz, 1859 | Parachromis managuensis | 36377 |
| Hemichromis guntheri Sauvage, 1882 | Chromidotilapia guntheri | 80565 |
| Apistogramma guttata Antonio C., Kullander & Lasso A., 1989 | Apistogramma guttata | 36377 |
| Hemichromis guttatus Günther, 1862 | Rubricatochromis guttatus | 128620 |
| Hemichromis guttatus (non Günther, 1862) | Rubricatochromis bimaculatus | 5644 |
| Heros guttulatus Günther, 1864 | Vieja guttulata | 36377 |
| Tilapia gutturosa Stiassny, Schliewen & Dominey, 1992 | Coptodon gutturosus | 93285 |
| Mesonauta guyanae Schindler, 1998 | Mesonauta guyanae | 36377 |
| Geophagus gymnogenys Hensel, 1870 | Gymnogeophagus gymnogenys | 36377 |
| Acara gymnopoma Günther, 1862 | Geophagus brasiliensis | 36377 |
| Paretroplus gymnopreopercularis Sparks, 2008 | Paretroplus gymnopreopercularis | 78623 |
| Paratilapia habereri Steindachner, 1912 | Heterochromis multidens | 52307 |
| Crenicichla hadrostigma Lucena, 2007 | Crenicichla hadrostigma | 75870 |
| Cichlasoma haitiense Tee-Van, 1935 | Nandopsis haitiensis | 13498 |
| Cichlasoma haitiensis Tee-Van, 1935 | Nandopsis haitiensis | 13498 |
| Pseudotropheus hajomaylandi Meyer & Schartl, 1984 | Maylandia hajomaylandi | 27596 |
| Aulonocara hansbaenschi Meyer, Riehl & Zetzsche, 1987 | Aulonocara hansbaenschi | 4975 |
| Crenicichla haroldoi Luengo & Britski, 1974 | Crenicichla haroldoi | 36377 |
| Haplochromis harpakteridion van Oijen, 1991 | Haplochromis harpakteridion | 26282 |
| Geophagus harreri Gosse, 1976 | Geophagus harreri | 26372 |
| Cichlasoma hartwegi Taylor & Miller, 1980 | Vieja hartwegi | 36377 |
| Pelmatochromis haugi Pellegrin, 1919 | Chromidotilapia regani | 59155 |
| Tilapia haugi (non Pellegrin, 1911) | Coptodon guineensis | 5163 |
| Tilapia haugi Pellegrin, 1911 | Pelmatolapia cabrae | 5163 |
| Crenicichla heckeli Ploeg, 1989 | Crenicichla heckeli | 36377 |
| Acara heckelii Müller & Troschel, 1849 | Acarichthys heckelii | 2037 |
| Lamprologus hecqui (non Boulenger, 1899) | Lepidiolamprologus boulengeri | 5667 |
| Lamprologus hecqui Boulenger, 1899 | Lepidiolamprologus hecqui | 5667 |
| Xenochromis hecqui Boulenger, 1899 | Xenochromis hecqui | 5716 |
| Cichlasoma hedricki Meek, 1904 | Rocio octofasciata | 74403 |
| Neolamprologus helianthus Büscher, 1997 | Neolamprologus helianthus | 74422 |
| Apistogramma helkeri Schindler & Staeck, 2013 | Apistogramma helkeri | 94599 |
| Cichlasoma hellabrunni Ladiges, 1942 | Hypselecara temporalis | 9088 |
| Heros helleri Steindachner, 1864 | Thorichthys helleri | 36377 |
| Thorichthys helleri meeki Brind, 1918 | Thorichthys meeki | 36377 |
| Parectodus hemelrycki Poll, 1943 | Grammatotria lemairii | 5640 |
| Crenicichla hemera Kullander, 1990 | Crenicichla hemera | 26677 |
| Haplochromis hennydaviesae Burgess & Axelrod, 1973 | Placidochromis hennydaviesae | 4994 |
| Aequidens hercules Allen, 1942 | Crenicara punctulata | 9088 |
| Melanochromis heterochromis Bowers & Stauffer, 1993 | Melanochromis heterochromis | 27612 |
| Haplochromis heterodon Trewavas, 1935 | Otopharynx heterodon | 267 |
| Labidochromis heterodon Lewis, 1982 | Labidochromis heterodon | 5653 |
| Heros heterodontus Vaillant & Pellegrin, 1902 | Astatheros macracanthus | 36377 |
| Pseudotropheus heteropictus Staeck, 1980 | Chindongo heteropictus | 27596 |
| Pseudotropheus heteropictus (non Staeck, 1980) | Maylandia flavifemina | 76849 |
| Cichlasoma heterospilum Hubbs, 1936 | Oscura heterospila | 36377 |
| Haplochromis heterotaenia Trewavas, 1935 | Buccochromis heterotaenia | 5607 |
| Tilapia heudeloti (non Duméril, 1861) | Oreochromis korogwe | 2 |
| Tilapia heudeloti (non Duméril, 1861) | Pelmatolapia mariae | 5163 |
| Tilapia heudeloti (non Duméril, 1861) | Oreochromis aureus | 2998 |
| Tilapia heudelotii (non Duméril, 1861) | Oreochromis aureus | 5166 |
| Tilapia heudelotii (non Duméril, 1861) | Sarotherodon nigripinnis | 2 |
| Tilapia heudelotii Duméril, 1861 | Sarotherodon melanotheron | 4999 |
| Tilapia heudelotii (non Duméril, 1861) | Sarotherodon galilaeus | 4999 |
| Tilapia heudelotii (non Duméril, 1861) | Sarotherodon mvogoi | 2 |
| Tilapia heudelotii (non Duméril, 1861) | Oreochromis schwebischi | 5166 |
| Haplochromis heusinkveldi Witte & Witte-Maas, 1987 | Haplochromis heusinkveldi | 4983 |
| Haplochromis hiatus Hoogerhoud & Witte, 1981 | Haplochromis hiatus | 4983 |
| Cichlaurus hicklingi Fowler, 1956 | Vieja melanurus | 86887 |
| Apistogramma hippolytae Kullander, 1982 | Apistogramma hippolytae | 36377 |
| Nannacara hoehnei Miranda Ribeiro, 1918 | Rondonacara hoehnei | 101427 |
| Cichlasoma hogaboomorum Carr & Giovannoli, 1950 | Amphilophus hogaboomorum | 36377 |
| Apistogramma hoignei Meinken, 1965 | Apistogramma hoignei | 36377 |
| Haplochromis holotaenia Regan, 1922 | Taeniochromis holotaenia | 267 |
| Geophagus hondae Regan, 1912 | Geophagus steindachneri | 36377 |
| Apistogramma hongsloi Kullander, 1979 | Apistogramma hongsloi | 36377 |
| Bujurquina hophrys Kullander, 1986 | Bujurquina hophrys | 9088 |
| Chromis horei Günther, 1894 | Shuja horei | 127080 |
| Benthochromis horii Takahashi, 2008 | Benthochromis horii | 74417 |
| Petrochromis horii Takahashi & Koblmüller, 2014 | Petrochromis horii | 95531 |
| Iranocichla hormuzensis Coad, 1982 | Iranocichla hormuzensis | 31728 |
| Bathybates hornii Steindachner, 1911 | Bathybates hornii | 5605 |
| Tilapia hornorum Trewavas, 1966 | Oreochromis urolepis | 118638 |
| Haplochromis howesi van Oijen, 1992 | Haplochromis howesi | 26282 |
| Crenicichla hu Piálek, Říčan, Casciotta & Almirón, 2010 | Crenicichla hu | 84540 |
| Bujurquina huallagae Kullander, 1986 | Bujurquina huallagae | 9088 |
| Apistogramma huascar Römer, Pretor & Hahn, 2006 | Apistogramma huascar | 57916 |
| Aulonocara hueseri Meyer, Riehl & Zetzsche, 1987 | Aulonocara hueseri | 4975 |
| Tilapia humilior Boulenger, 1911 | Haplochromis humilior | 4983 |
| Chromis humilis Steindachner, 1866 | Haplochromis humilis | 26282 |
| Pelmatochromis humilis Boulenger, 1916 | Wallaceochromis humilis | 7378 |
| Crenicichla hummelincki Ploeg, 1991 | Crenicichla hummelincki | 36377 |
| Oreochromis hunteri Günther, 1889 | Oreochromis hunteri | 2 |
| Cichlasoma hyorhynchum Hubbs, 1935 | Thorichthys meeki | 36377 |
| Acara hyposticta Cope, 1878 | Astronotus ocellatus | 9088 |
| Labidochromis ianthinus Lewis, 1982 | Labidochromis ianthinus | 5653 |
| Crenicichla igara Lucena & Kullander, 1992 | Crenicichla igara | 26688 |
| Pundamilia igneopinnis Seehausen & Lippitsch, 1998 | Haplochromis igneopinnis | 12750 |
| Crenicichla iguapina Kullander & Lucena, 2006 | Crenicichla iguapina | 57632 |
| Crenicichla iguassuensis Haseman, 1911 | Crenicichla iguassuensis | 36377 |
| Copadichromis ilesi Konings, 1999 | Copadichromis ilesi | 47113 |
| Tilapia imbriferna Stiassny, Schliewen & Dominey, 1992 | Coptodon imbrifernus | 93285 |
| Acara imperialis Steindachner, 1879 | Uaru amphiacanthoides | 36377 |
| Haplochromis incola Trewavas, 1935 | Mylochromis incola | 267 |
| Apistogramma inconspicua Kullander, 1983 | Apistogramma inconspicua | 36377 |
| Orthochromis indermauri Schedel, Vreven, Katemo Manda, Abwe, Chocha Manda & Schliewen, 2018 | Orthochromis indermauri | 122085 |
| Tilapia inducta Trewavas, 1933 | Oreochromis niloticus | 5166 |
| Apistogramma iniridae Kullander, 1979 | Apistogramma iniridae | 36377 |
| Apistogramma inornata Staeck, 2003 | Apistogramma inornata | 55839 |
| Tilapia inornata Boulenger, 1908 | Mchenga inornata | 4979 |
| Ptychochromis inornatus Sparks, 2002 | Ptychochromis inornatus | 41510 |
| Crenicichla inpa Ploeg, 1991 | Crenicichla inpa | 36377 |
| Haplochromis insidiae Snoeks, 1994 | Haplochromis insidiae | 46152 |
| Haplochromis insignis Trewavas, 1935 | Protomelas insignis | 267 |
| Heros insignis Heckel, 1840 | Mesonauta insignis | 36377 |
| Ptychochromis insolitus Stiassny & Sparks, 2006 | Ptychochromis insolitus | 57663 |
| Copadichromis insularis Stauffer & Konings, 2006 | Copadichromis insularis | 57549 |
| Apistogramma intermedia Mesa S. & Lasso, 2011 | Apistogramma intermedia | 89990 |
| Cichla intermedia Machado-Allison, 1971 | Cichla intermedia | 57716 |
| Lethrinops intermedia Trewavas, 1935 | Tramitichromis intermedius | 267 |
| Tilapia intermedia Gilchrist & Thompson, 1917 | Oreochromis macrochir | 2 |
| Hemichromis intermedius Günther, 1864 | Ctenopharynx intermedius | 4981 |
| Heros intermedius Günther, 1862 | Chuco intermedium | 36377 |
| Pelmatochromis intermedius Boulenger, 1916 | Tylochromis intermedius | 5714 |
| Pelmatochromis intermedius (non Boulenger, 1916) | Tylochromis leonensis | 5714 |
| Placidochromis intermedius Hanssens, 2004 | Placidochromis intermedius | 55898 |
| Melanochromis interruptus Johnson, 1975 | Pseudotropheus interruptus | 89864 |
| Australoheros ipatinguensis Ottoni & Costa, 2008 | Australoheros ipatinguensis | 79631 |
| Haplochromis iris Hoogerhoud & Witte, 1981 | Haplochromis iris | 4983 |
| Theraps irregularis Günther, 1862 | Theraps irregularis | 36377 |
| Tanganicodus irsacae Poll, 1950 | Tanganicodus irsacae | 5702 |
| Gobiochromis irvinei Trewavas, 1943 | Paragobiocichla irvinei | 5696 |
| Crenicichla isbrueckeri Ploeg, 1991 | Crenicichla isbrueckeri | 36377 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis pallidus | 4983 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis macrops | 4983 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis riponianus | 4983 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis phytophagus | 4983 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis prodromus | 4983 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis pharyngomylus | 4983 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis mylodon | 4983 |
| Haplochromis ishmaeli Boulenger, 1906 | Haplochromis ishmaeli | 4983 |
| Haplochromis ishmaeli (non Boulenger, 1906) | Haplochromis empodisma | 4983 |
| Oreochromis ismailiaensis Mekkawy, 1995 | Oreochromis ismailiaensis | 47363 |
| Tilapia ismailiaensis Mekkawy, 1995 | Coptodon ismailiaensis | 93285 |
| Heroina isonycterina Kullander, 1996 | Heroina isonycterina | 26648 |
| Cichlasoma istlana fusca de Buen, 1946 | Amphilophus istlanus | 36377 |
| Heros istlanus Jordan & Snyder, 1899 | Amphilophus istlanus | 36377 |
| Aequidens itanyi Puyo, 1943 | Krobia itanyi | 26372 |
| Ptychochromoides itasy Sparks, 2004 | Ptychochromoides itasy | 53256 |
| Haplochromis jacksoni Iles, 1960 | Copadichromis jacksoni | 4979 |
| Haplochromis jacksoni (non Iles, 1960) | Sciaenochromis fryeri | 40899 |
| Trematocranus jacobfreibergi Johnson, 1974 | Aulonocara jacobfreibergi | 4975 |
| Crenicichla jaguarensis Haseman, 1911 | Crenicichla jaguarensis | 36377 |
| Chromis jallae Boulenger, 1896 | Pharyngochromis acuticeps | 47334 |
| Hemichromis jallae Boulenger, 1896 | Serranochromis jallae | 128638 |
| Serranochromis janus Trewavas, 1964 | Serranochromis janus | 5693 |
| Cichla jariina Kullander & Ferreira, 2006 | Cichla jariina | 57716 |
| Gymnogeophagus jaryi Alonso, Terán, Aguilera, Říčan, Casciotta, Serra, Almirón, Benítez et al., 2019 | Gymnogeophagus jaryi | 119666 |
| Astatotilapia jeanneli Pellegrin, 1913 | Haplochromis degeni | 5680 |
| Crenicichla jegui Ploeg, 1986 | Crenicichla jegui | 36377 |
| Paratilapia jentinki Steindachner, 1894 | Tylochromis jentinki | 5714 |
| Tylochromis jentinki sudanensis Daget, 1954 | Tylochromis sudanensis | 7378 |
| Heros jenynsii Steindachner, 1869 | Australoheros facetus | 74689 |
| Tilapia jipe Lowe, 1955 | Oreochromis jipe | 5166 |
| Labidochromis joanjohnsonae Johnson, 1974 | Labidochromis joanjohnsonae | 119491 |
| Labidochromis joanjohnsonae (non Johnson, 1974) | Labidochromis textilis | 5653 |
| Crenicichla johanna Heckel, 1840 | Crenicichla johanna | 9088 |
| Crenicichla johanna carsevennensis Pellegrin, 1905 | Crenicichla johanna | 26135 |
| Crenicichla johanna strigata Günther, 1862 | Crenicichla strigata | 36377 |
| Pseudotropheus johannii Eccles, 1973 | Pseudotropheus johannii | 89864 |
| Chromis johnstoni Günther, 1894 | Placidochromis johnstoni | 4994 |
| Docimodus johnstoni Boulenger, 1897 | Docimodus johnstoni | 5629 |
| Tilapia joka Thys van den Audenaerde, 1969 | Coelotilapia joka | 93285 |
| Crenicichla jupiaensis Britski & Luengo, 1968 | Crenicichla jupiaensis | 36377 |
| Crenicichla jurubi Lucena & Kullander, 1992 | Crenicichla jurubi | 26688 |
| Apistogramma juruensis Kullander, 1986 | Apistogramma juruensis | 9088 |
| Geophagus jurupari Heckel, 1840 | Satanoperca jurupari | 9088 |
| Australoheros kaaygua (non Casciotta, Almirón & Gómez, 2006) | Australoheros angiru | 87600 |
| Australoheros kaaygua Casciotta, Almirón & Gómez, 2006 | Australoheros kaaygua | 57794 |
| Tilapia kacherbi Wunder, 1960 | Oreochromis aureus | 2 |
| Paratilapia kafuensis Boulenger, 1908 | Serranochromis angusticeps | 5693 |
| Tilapia kafuensis Boulenger, 1912 | Oreochromis andersonii | 5166 |
| Tilapia kafuensis (non Boulenger, 1912) | Oreochromis macrochir | 2 |
| Tilapia kafuensis (non Boulenger, 1912) | Oreochromis mossambicus | 5166 |
| Glyphisodon kakaitsel Lacepède, 1802 | Pseudetroplus maculatus | 6028 |
| Schwetzochromis kalungwishiensis Greenwood & Kullander, 1994 | Orthochromis kalungwishiensis | 26626 |
| Lepidiolamprologus kamambae Kullander, Karlsson & Karlsson, 2012 | Lepidiolamprologus kamambae | 91764 |
| Haplochromis kamiranzovu Snoeks, Coenen & Thys van den Audenaerde, 1984 | Haplochromis kamiranzovu | 4983 |
| Tropheops kamtambo Li, Konings & Stauffer, 2016 | Tropheops kamtambo | 119465 |
| Amatitlania kanna Schmitter-Soto, 2007 | Amatitlania kanna | 74403 |
| Tilapia karomo Poll, 1948 | Oreochromis karomo | 2 |
| Tilapia karongae Trewavas, 1941 | Oreochromis karongae | 2 |
| Tilapia kashabi Elster, 1958 | Oreochromis aureus | 5166 |
| Melanochromis kaskazini Konings-Dudin, Konings & Stauffer, 2009 | Melanochromis kaskazini | 80784 |
| Orthochromis kasuluensis De Vos & Seegers, 1998 | Orthochromis kasuluensis | 28906 |
| Haplochromis katavi Seegers, 1996 | Haplochromis katavi | 27292 |
| Haplochromis katonga Schraml & Tichy, 2010 | Haplochromis katonga | 85068 |
| Ptychochromoides katria Reinthal & Stiassny, 1997 | Katria katria | 26236 |
| Orthochromis katumbii Schedel, Vreven, Katemo Manda, Abwe, Chocha Manda & Schliewen, 2018 | Orthochromis katumbii | 122085 |
| Haplochromis katunzii ter Huurne & Witte, 2010 | Haplochromis katunzii | 85523 |
| Cichla kelberi Kullander & Ferreira, 2006 | Cichla kelberi | 57716 |
| Lamprologus kendalli Poll & Stewart, 1977 | Lepidiolamprologus kendalli | 5655 |
| Paretroplus kieneri Arnoult, 1960 | Paretroplus kieneri | 5675 |
| Paratilapia kilossana Steindachner, 1914 | Astatotilapia bloyeti | 4983 |
| Haplochromis kimondo Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis kimondo | 126312 |
| Orthochromis kimpala Schedel, Vreven, Katemo Manda, Abwe, Chocha Manda & Schliewen, 2018 | Orthochromis kimpala | 122085 |
| Chromidotilapia kingsleyae Boulenger, 1898 | Chromidotilapia kingsleyae | 5616 |
| Lamprologus kiritvaithai Meyer, Foerster & Dieckhoff, 1986 | Lepidiolamprologus boulengeri | 5667 |
| Tilapia kirkhami Gilchrist & Thompson, 1917 | Coptodon rendalli | 88 |
| Chromis kirkii Günther, 1894 | Protomelas kirkii | 267 |
| Chromis kirkii (non Günther, 1894) | Protomelas marginatus | 267 |
| Haplochromis kiwinge Ahl, 1926 | Dimidiochromis kiwinge | 267 |
| Apistogramma klausewitzi Meinken, 1962 | Apistogramma bitaeniata | 9088 |
| Apistogramma kleei Meinken, 1964 | Apistogramma bitaeniata | 9088 |
| Pelmatochromis klugei Meinken, 1960 | Pelvicachromis taeniatus | 5677 |
| Sarotherodon knauerae Neumann, Stiassny & Schliewen, 2011 | Sarotherodon knauerae | 86429 |
| Aulonocara koningsi Tawil, 2003 | Aulonocara koningsi | 55929 |
| Hemibates koningsi Schedel & Schliewen, 2017 | Hemibates koningsi | 117350 |
| Metriaclima koningsi Stauffer, 2018 | Maylandia koningsi | 127491 |
| Placidochromis koningsi Hanssens, 2004 | Placidochromis koningsi | 55898 |
| Tilapia konkourensis Dunz & Schliewen, 2012 | Coptodon konkourensis | 93285 |
| Aulonocara korneliae Meyer, Riehl & Zetzsche, 1987 | Aulonocara korneliae | 4975 |
| Glyphisodon koruschi Cuvier, 1830 | Pseudetroplus maculatus | 41236 |
| Tilapia kottae (non Lönnberg, 1904) | Coptodon margaritacea | 5163 |
| Tilapia kottae Lönnberg, 1904 | Coptodon kottae | 93285 |
| Tilapia kottae (non Lönnberg, 1904) | Coptodon nyongana | 5163 |
| Protomelas krampus Dierickx & Snoeks, 2020 | Protomelas krampus | 122325 |
| Petenia kraussii Steindachner, 1878 | Caquetaia kraussii | 36377 |
| Pelmatochromis kribensis (non Boulenger, 1911) | Pelvicachromis pulcher | 5677 |
| Pelmatochromis kribensis Boulenger, 1911 | Pelvicachromis kribensis | 97630 |
| Pelmatochromis kribensis calliptera Pellegrin, 1929 | Pelvicachromis taeniatus | 5677 |
| Trematocara kufferathi Poll, 1948 | Trematocara kufferathi | 5708 |
| Haplochromis kujunjui van Oijen, 1991 | Haplochromis kujunjui | 26282 |
| Apistogramma kullanderi Varella & Sabaj Pérez, 2014 | Apistogramma kullanderi | 98797 |
| Tropheops kumwera Li, Konings & Stauffer, 2016 | Tropheops kumwera | 119465 |
| Lamprologus kungweensis Poll, 1956 | Lamprologus kungweensis | 5654 |
| Tilapia labiata Boulenger, 1898 | Lobochilotes labiata | 5661 |
| Geophagus labiatus Hensel, 1870 | Gymnogeophagus labiatus | 36377 |
| Haplochromis labiatus Trewavas, 1933 | Haplochromis labiatus | 4983 |
| Heros labiatus Günther, 1864 | Amphilophus labiatus | 36377 |
| Haplochromis labidodon Trewavas, 1935 | Mylochromis labidodon | 267 |
| Haplochromis labifer Trewavas, 1935 | Trematocranus labifer | 267 |
| Bujurquina labiosa Kullander, 1986 | Bujurquina labiosa | 9088 |
| Haplochromis labridens Trewavas, 1935 | Protomelas labridens | 267 |
| Heros labridens Pellegrin, 1903 | Herichthys labridens | 36377 |
| Tilapia labriforma Nichols & La Monte, 1938 | Haplochromis labriformis | 4983 |
| Cychla labrina Spix & Agassiz, 1831 | Crenicichla labrina | 36377 |
| Tylochromis labrodon (non Regan, 1920) | Tylochromis lateralis | 5714 |
| Tylochromis labrodon Regan, 1920 | Tylochromis labrodon | 5714 |
| Melanochromis labrosus Trewavas, 1935 | Abactochromis labrosus | 85491 |
| Tilapia lacrimosa Boulenger, 1906 | Haplochromis lacrimosus | 4983 |
| Tilapia lacrimosa (non Boulenger, 1906) | Haplochromis melanopus | 4983 |
| Tilapia lacrimosa (non Boulenger, 1906) | Haplochromis humilior | 4983 |
| Tilapia lacrimosa (non Boulenger, 1906) | Haplochromis empodisma | 4983 |
| Tilapia lacrimosa (non Boulenger, 1906) | Haplochromis obtusidens | 4983 |
| Cycla lacustris Castelnau, 1855 | Crenicichla lacustris | 36377 |
| Gymnogeophagus lacustris Reis & Malabarba, 1988 | Gymnogeophagus lacustris | 36377 |
| Crenicichla lacustris semifasciata Devincenzi, 1939 | Crenicichla scottii | 36377 |
| Paretroplus lamenabe Sparks, 2008 | Paretroplus lamenabe | 78623 |
| Sarotherodon lamprechti Neumann, Stiassny & Schliewen, 2011 | Sarotherodon lamprechti | 86429 |
| Haplochromis lamprogenys Fowler, 1936 | Haplochromis prognathus | 4983 |
| Pseudotropheus lanisticola Burgess, 1976 | Maylandia lanisticola | 27596 |
| Haplochromis laparogramma Greenwood & Gee, 1969 | Haplochromis laparogramma | 4983 |
| Lamprologus laparogramma Bills & Ribbink, 1997 | Lamprologus laparogramma | 28630 |
| Chromys lapidifera Castelnau, 1855 | Retroculus lapidifer | 36377 |
| Tilapia lata camerunensis Lönnberg, 1903 | Coptodon camerunensis | 33021 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis regani | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis labrodon | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis mylodon | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis microdon | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis sudanensis | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis robertsi | 5714 |
| Pelmatochromis lateralis Boulenger, 1898 | Tylochromis lateralis | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis pulcher | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis bangwelensis | 5714 |
| Pelmatochromis lateralis (non Boulenger, 1898) | Tylochromis variabilis | 5714 |
| Tilapia lateralis Duméril, 1861 | Sarotherodon galilaeus | 4999 |
| Chromis lateristriga (non Günther, 1864) | Dimidiochromis dimidiatus | 5627 |
| Chromis lateristriga (non Günther, 1864) | Mylochromis melanonotus | 4995 |
| Chromis lateristriga Günther, 1864 | Mylochromis lateristriga | 267 |
| Chromis lateristriga (non Günther, 1864) | Mylochromis guentheri | 4986 |
| Lethrinops laticeps Trewavas, 1931 | Taeniolethrinops laticeps | 267 |
| Haplochromis latifasciatus Regan, 1929 | Haplochromis latifasciatus | 4983 |
| Acara latifrons Steindachner, 1878 | Andinoacara latifrons | 36377 |
| Haplochromis latifrons Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis latifrons | 126312 |
| Tilapia latifrons Boulenger, 1906 | Coptodon rendalli | 5163 |
| Oreochromis latilabris Seegers & Tichy, 1999 | Oreochromis latilabris | 126093 |
| Crenicara latruncularium Kullander & Staeck, 1990 | Crenicara latruncularium | 36377 |
| Cichlasoma laurae Regan, 1908 | Herichthys carpintis | 36377 |
| Cichlosoma laurae Regan, 1908 | Herichthys carpintis | 36377 |
| Gephyrochromis lawsi Fryer, 1957 | Gephyrochromis lawsi | 5637 |
| Hemichromis leiguardii de Brito Capello, 1873 | Hemichromis fasciatus | 123791 |
| Lamprologus leleupi Poll, 1956 | Neolamprologus leleupi | 5667 |
| Lamprologus leleupi longior Staeck, 1980 | Neolamprologus longior | 5667 |
| Lamprologus leleupi melas Matthes, 1959 | Neolamprologus leleupi | 5667 |
| Lamprologus leloupi Poll, 1948 | Neolamprologus leloupi | 5667 |
| Grammatotria lemairii Boulenger, 1899 | Grammatotria lemairii | 5640 |
| Lamprologus lemairii Boulenger, 1899 | Lamprologus lemairii | 5654 |
| Tilapia lemassoni Blache & Miton, 1960 | Oreochromis aureus | 2 |
| Crenicichla lenticulata Heckel, 1840 | Crenicichla lenticulata | 36377 |
| Heros lentiginosus Steindachner, 1864 | Rheoheros lentiginosus | 36377 |
| Bathybates leo Poll, 1956 | Bathybates leo | 5605 |
| Tilapia leonensis Thys van den Audenaerde, 1971 | Sarotherodon melanotheron | 2 |
| Tylochromis leonensis Stiassny, 1989 | Tylochromis leonensis | 5714 |
| Cichlasoma leonhard-schultzei Ahl, 1935 | Amphilophus istlanus | 36377 |
| Cichlasoma leonhardschultzei Ahl, 1935 | Amphilophus istlanus | 36377 |
| Plataxoides leopoldi Gosse, 1963 | Pterophyllum leopoldi | 36377 |
| Melanochromis lepidiadaptes Bowers & Stauffer, 1997 | Melanochromis lepidiadaptes | 26078 |
| Crenicichla lepidota Heckel, 1840 | Crenicichla lepidota | 36377 |
| Tilapia lepidura (non Boulenger, 1899) | Sarotherodon galilaeus | 4999 |
| Tilapia lepidura Boulenger, 1899 | Oreochromis lepidurus | 5166 |
| Pelmatochromis lepidurus Pellegrin, 1900 | Tylochromis lateralis | 5714 |
| Lethrinops leptodon (non Regan, 1922) | Lethrinops lunaris | 267 |
| Lethrinops leptodon Regan, 1922 | Lethrinops leptodon | 267 |
| Paratilapia leptosoma Boulenger, 1898 | Cyprichromis leptosoma | 5625 |
| Rhamphochromis leptosoma Regan, 1922 | Rhamphochromis esox | 55949 |
| Asprotilapia leptura Boulenger, 1901 | Xenotilapia leptura | 5601 |
| Haplochromis lepturus Regan, 1922 | Buccochromis lepturus | 267 |
| Lamprologus lestradei Poll, 1943 | Lamprologus ocellatus | 5654 |
| Parectodus lestradei Poll, 1942 | Xenotilapia boulengeri | 5717 |
| Telmatochromis lestradei Poll, 1942 | Telmatochromis temporalis | 5704 |
| Lamprologus lethops Roberts & Stewart, 1976 | Lamprologus lethops | 5654 |
| Chromis lethrinus Günther, 1894 | Lethrinops lethrinus | 267 |
| Cichlasoma lethrinus Regan, 1908 | Cribroheros alfari | 36377 |
| Cichlosoma lethrinus Regan, 1908 | Cribroheros alfari | 36377 |
| Hemichromis letourneuxi Sauvage, 1880 | Rubricatochromis letourneuxi | 128620 |
| Haplochromis leuciscus Regan, 1922 | Nyassachromis leuciscus | 267 |
| Tilapia leucosticta Trewavas, 1933 | Oreochromis leucostictus | 2 |
| Geophagus leucostictus Müller & Troschel, 1849 | Satanoperca leucosticta | 36377 |
| Geophagus leucostictus (non Müller & Troschel, 1849) | Satanoperca jurupari | 1672 |
| Chromis levaillantii Castelnau, 1861 | Serranochromis angusticeps | 93641 |
| Chromys levaillantii Castelnau, 1861 | Serranochromis angusticeps | 5693 |
| Tilapia liberiensis Thys van den Audenaerde, 1971 | Sarotherodon tournieri | 4999 |
| Heros liberifer Staeck & Schindler, 2015 | Heros liberifer | 114589 |
| Tilapia lidole Trewavas, 1941 | Oreochromis lidole | 2 |
| Cyrtocara liemi McKaye & Mackenzie, 1982 | Caprichromis liemi | 267 |
| Hemichromis lifalili Loiselle, 1979 | Rubricatochromis lifalili | 128620 |
| Haplochromis likomae Iles, 1960 | Copadichromis likomae | 4979 |
| Satanoperca lilith Kullander & Ferreira, 1988 | Satanoperca lilith | 36377 |
| Haplochromis limax Trewavas, 1933 | Haplochromis limax | 4983 |
| Diplotaxodon limnothrissa Turner, 1994 | Diplotaxodon limnothrissa | 36759 |
| Apistogramma lineata Mesa S. & Lasso, 2011 | Apistogramma lineata | 89990 |
| Placidochromis lineatus Hanssens, 2004 | Placidochromis lineatus | 55898 |
| Apistogramma linkei Koslowski, 1985 | Apistogramma linkei | 36377 |
| Chromidotilapia linkei Staeck, 1980 | Chromidotilapia linkei | 5616 |
| Tilapia linnellii Lönnberg, 1903 | Sarotherodon linnellii | 4999 |
| Haplochromis linni Burgess & Axelrod, 1975 | Nimbochromis linni | 267 |
| Gymnogeophagus lipokarenos Malabarba, Malabarba & Reis, 2015 | Gymnogeophagus lipokarenos | 118066 |
| Otopharynx lithobates Oliver, 1984 | Otopharynx lithobates | 4991 |
| Otopharynx lithobates Oliver, 1989 | Otopharynx lithobates | 4991 |
| Lethrinops lituris Trewavas, 1931 | Tramitichromis lituris | 267 |
| Haplochromis lividus Greenwood, 1956 | Haplochromis lividus | 4983 |
| Labidochromis lividus Lewis, 1982 | Labidochromis lividus | 5653 |
| Hemichromis livingstonii Günther, 1894 | Nimbochromis livingstonii | 267 |
| Tilapia livingstonii Boulenger, 1899 | Pseudotropheus livingstonii | 5684 |
| Haplochromis loati Greenwood, 1971 | Haplochromis loati | 4983 |
| Haplochromis lobatus Vranken, Van Steenberge, Kayenbergh & Snoeks, 2020 | Haplochromis lobatus | 126507 |
| Haplochromis lobochilus Trewavas, 1935 | Eclectochromis lobochilus | 267 |
| Heros lobochilus Günther, 1867 | Amphilophus labiatus | 36377 |
| Pelmatochromis loennbergi Trewavas, 1962 | Chromidotilapia guntheri | 5616 |
| Tilapia lohbergeri Holly, 1930 | Sarotherodon lohbergeri | 2 |
| Cichlasoma loisellei Bussing, 1989 | Parachromis loisellei | 36377 |
| Paretroplus loisellei Sparks & Schelly, 2011 | Paretroplus loisellei | 86507 |
| Ptychochromis loisellei Stiassny & Sparks, 2006 | Ptychochromis loisellei | 57663 |
| Pseudotropheus lombardoi Burgess, 1977 | Maylandia lombardoi | 27596 |
| Ectodus longianalis Boulenger, 1899 | Xenotilapia melanogenys | 54621 |
| Neolamprologus longicaudatus Nakaya & Gashagaza, 1995 | Neolamprologus longicaudatus | 50569 |
| Hemichromis longiceps Günther, 1864 | Rhamphochromis longiceps | 267 |
| Haplochromis longimanus Trewavas, 1935 | Placidochromis longimanus | 4994 |
| Heros longimanus Günther, 1867 | Cribroheros longimanus | 114771 |
| Lethrinops longimanus Trewavas, 1931 | Lethrinops longimanus | 4985 |
| Paratilapia longimanus Boulenger, 1911 | Serranochromis longimanus | 5693 |
| Diplotaxodon longimaxilla Stauffer, Phiri & Konings, 2018 | Diplotaxodon longimaxilla | 127500 |
| Pseudotropheus longior Seegers, 1996 | Chindongo longior | 119465 |
| Haplochromis longipes Regan, 1922 | Champsochromis spilorhynchus | 267 |
| Lethrinops longipinnis Eccles & Lewis, 1978 | Lethrinops longipinnis | 4985 |
| Paratilapia longipinnis Nichols & Griscom, 1917 | Pelmatochromis nigrofasciatus | 5676 |
| Paratilapia longirostris (non Hilgendorf, 1888) | Haplochromis mento | 4983 |
| Paratilapia longirostris (non Hilgendorf, 1888) | Haplochromis argenteus | 4983 |
| Paratilapia longirostris (non Hilgendorf, 1888) | Haplochromis dentex | 4983 |
| Paratilapia longirostris (non Hilgendorf, 1888) | Haplochromis plagiostoma | 4983 |
| Paratilapia longirostris (non Hilgendorf, 1888) | Haplochromis macrognathus | 4983 |
| Paratilapia longirostris (non Hilgendorf, 1888) | Haplochromis altigenis | 4983 |
| Paratilapia longirostris Hilgendorf, 1888 | Haplochromis longirostris | 4983 |
| Pelmatochromis longirostris Boulenger, 1903 | Parananochromis longirostris | 5673 |
| Pelmatochromis longirostris (non Boulenger, 1903) | Chromidotilapia guntheri | 5616 |
| Pelmatochromis longirostris (non Boulenger, 1903) | Chromidotilapia schoutedeni | 5616 |
| Placidochromis longirostris Hanssens, 2004 | Placidochromis longirostris | 55898 |
| Xenotilapia longispinis Poll, 1951 | Xenotilapia longispinis | 50515 |
| Xenotilapia longispinis burtoni Poll, 1951 | Xenotilapia burtoni | 5717 |
| Cunningtonia longiventralis Boulenger, 1906 | Cunningtonia longiventralis | 5618 |
| Placidochromis longus Hanssens, 2004 | Placidochromis longus | 55898 |
| Limnotilapia loocki Poll, 1949 | Interochromis loocki | 5694 |
| Melanochromis loriae Johnson, 1975 | Melanochromis loriae | 5663 |
| Tilapia louka Thys van den Audenaerde, 1969 | Coptodon louka | 93285 |
| Congolapia louna Dunz, Vreven & Schliewen, 2012 | Congolapia louna | 92878 |
| Pelmatochromis loveridgei Borodin, 1931 | Limnotilapia dardennii | 5660 |
| Enigmatochromis lucanusi Lamboj, 2009 | Enigmatochromis lucanusi | 81928 |
| Crenicichla lucenai Mattos, Schindler, Ottoni & Cheffe, 2014 | Crenicichla lucenai | 95826 |
| Pseudotropheus lucerna Trewavas, 1935 | Tropheops lucerna | 79521 |
| Crenicichla lucius Cope, 1870 | Crenicichla lucius | 9088 |
| Rhamphochromis lucius Ahl, 1926 | Rhamphochromis lucius | 55949 |
| Tilapia lucullae (non Boulenger, 1913) | Pseudocrenilabrus philander | 5682 |
| Tilapia lucullae Boulenger, 1913 | Thoracochromis lucullae | 4983 |
| Paratilapia luebberti Hilgendorf, 1902 | Pseudocrenilabrus philander | 5682 |
| Apistogramma luelingi Kullander, 1976 | Apistogramma luelingi | 9088 |
| Crenicichla lugubris Heckel, 1840 | Crenicichla lugubris | 36377 |
| Orthochromis luichensis De Vos & Seegers, 1998 | Orthochromis luichensis | 28906 |
| Placidochromis lukomae Hanssens, 2004 | Placidochromis lukomae | 55898 |
| Paratilapia lukugae Boulenger, 1919 | Aulonocranus dewindti | 5603 |
| Tilapia luluae Fowler, 1930 | Haplochromis luluae | 4983 |
| Lethrinops lunaris Trewavas, 1931 | Lethrinops lunaris | 4985 |
| Metriaclima lundoense Stauffer, Black & Konings, 2013 | Maylandia lundoensis | 93436 |
| Schwetzochromis luongoensis Greenwood & Kullander, 1994 | Orthochromis luongoensis | 26626 |
| Mbipia lutea Seehausen & Bouton, 1998 | Haplochromis luteus | 27668 |
| Cichlasoma lyonsi Gosse, 1966 | Amphilophus lyonsi | 36377 |
| Bujurquina mabelae Careaga, Miranda, & Carvajal-Vallejos, 2023 | Bujurquina mabelae | 128932 |
| Australoheros macacuensis Ottoni & Costa, 2008 | Australoheros macacuensis | 79631 |
| Australoheros macaensis Ottoni & Costa, 2008 | Australoheros macaensis | 79631 |
| Tahuantinsuyoa macantzatza Kullander, 1986 | Tahuantinsuyoa macantzatza | 9088 |
| Haplochromis macconneli Greenwood, 1974 | Haplochromis macconneli | 4983 |
| Haplochromis machadoi Poll, 1967 | Orthochromis machadoi | 4983 |
| Tilapia mackeani Gilchrist & Thompson, 1917 | Coptodon rendalli | 88 |
| Barombia maclareni Trewavas, 1962 | Pungu maclareni | 4998 |
| Apistogramma macmasteri Kullander, 1979 | Apistogramma macmasteri | 36377 |
| Heros macracanthus Günther, 1864 | Astatheros macracanthus | 114771 |
| Lethrinops macracanthus Trewavas, 1931 | Lethrinops macracanthus | 4985 |
| Tilapia macrocentra Duméril, 1861 | Sarotherodon galilaeus | 4999 |
| Paratilapia macrocephala (non Boulenger, 1899) | Serranochromis stappersi | 5693 |
| Paratilapia macrocephala Boulenger, 1899 | Serranochromis macrocephalus | 5693 |
| Pundamilia macrocephala Seehausen & Bouton, 1998 | Haplochromis macrocephalus | 12750 |
| Chromis macrocephalus Bleeker, 1862 | Sarotherodon melanotheron | 4999 |
| Melanogenes macrocephalus Bleeker, 1863 | Sarotherodon melanotheron | 4999 |
| Placidochromis macroceps Hanssens, 2004 | Placidochromis macroceps | 55898 |
| Aulonocara macrochir Trewavas, 1935 | Aulonocara rostratum | 40898 |
| Haplochromis macrochir Regan, 1922 | Lethrinops macrochir | 267 |
| Tilapia macrochir Boulenger, 1912 | Oreochromis macrochir | 2 |
| Tilapia macrochir (non Boulenger, 1912) | Sarotherodon galilaeus | 4999 |
| Oreochromis macrochir mweruensis Trewavas, 1983 | Oreochromis mweruensis | 2 |
| Cyrtocara macrocleithrum Stauffer & McKaye, 1985 | Alticorpus macrocleithrum | 5594 |
| Haplochromis macrodon Regan, 1922 | Haplochromis prognathus | 4983 |
| Protomelas macrodon Eccles, 1989 | Protomelas macrodon | 4996 |
| Haplochromis macrognathus Regan, 1922 | Haplochromis macrognathus | 4983 |
| Petrochromis macrognathus Yamaoka, 1983 | Petrochromis macrognathus | 5679 |
| Placidochromis macrognathus Hanssens, 2004 | Placidochromis macrognathus | 55898 |
| Julidochromis macrolepis Borodin, 1931 | Telmatochromis temporalis | 5704 |
| Satanoperca macrolepis Günther, 1862 | Satanoperca leucosticta | 26372 |
| Crenicichla macrophthalma Heckel, 1840 | Crenicichla macrophthalma | 36377 |
| Tilapia macrophthalma (non Boulenger, 1908) | Lethrinops albus | 4985 |
| Tilapia macrophthalma Boulenger, 1908 | Lethrinops macrophthalmus | 4985 |
| Tilapia macrophthalma (non Boulenger, 1908) | Otopharynx argyrosoma | 267 |
| Pseudotropheus macrophthalmus Ahl, 1926 | Tropheops macrophthalmus | 79521 |
| Rhamphochromis macrophthalmus Regan, 1922 | Rhamphochromis macrophthalmus | 5689 |
| Tylochromis macrophthalmus David, 1936 | Callochromis macrops | 5608 |
| Diplotaxodon macrops Turner & Stauffer, 1998 | Diplotaxodon macrops | 30390 |
| Paratilapia macrops Boulenger, 1898 | Callochromis macrops | 5608 |
| Tilapia macrops Boulenger, 1911 | Haplochromis macrops | 4983 |
| Haplochromis macropsoides Greenwood, 1973 | Haplochromis macropsoides | 4983 |
| Stigmatochromis macrorhynchos Stauffer, Cleaver-Yoder & Konings, 2011 | Stigmatochromis macrorhynchos | 87930 |
| Haplochromis macrorhynchus Regan, 1922 | Fossorochromis rostratus | 267 |
| Lethrinops macrorhynchus Regan, 1922 | Taeniolethrinops praeorbitalis | 267 |
| Haplochromis macrostoma Regan, 1922 | Tyrannochromis macrostoma | 267 |
| Haplochromis macrostoma (non Regan, 1922) | Tyrannochromis nigriventer | 267 |
| Trematocara macrostoma Poll, 1952 | Trematocara macrostoma | 44258 |
| Crenicichla maculata Kullander & Lucena, 2006 | Crenicichla maculata | 57632 |
| Chaetodon maculatus Bloch, 1795 | Pseudetroplus maculatus | 6028 |
| Dicrossus maculatus Steindachner, 1875 | Dicrossus maculatus | 36377 |
| Paretroplus maculatus Kiener & Maugé, 1966 | Paretroplus maculatus | 5675 |
| Cichlasoma maculicauda Regan, 1905 | Vieja maculicauda | 36377 |
| Labidochromis maculicauda Lewis, 1982 | Labidochromis maculicauda | 5653 |
| Haplochromis maculiceps Ahl, 1926 | Tyrannochromis maculiceps | 267 |
| Tilapia maculifer Ahl, 1939 | Thysochromis ansorgii | 5706 |
| Haplochromis maculimanus Regan, 1922 | Nimbochromis polystigma | 55922 |
| Paratilapia maculipinna Pellegrin, 1913 | Haplochromis maculipinna | 4983 |
| Heros maculipinnis (non Steindachner, 1864) | Thorichthys aureus | 7335 |
| Heros maculipinnis Steindachner, 1864 | Thorichthys maculipinnis | 114771 |
| Chromis madagascariensis Guichenot, 1866 | Paretroplus polyactis | 5675 |
| Ptychochromis madagascariensis Liénard, 1891 | Ptychochromis grandidieri | 50642 |
| Aequidens madeirae Fowler, 1913 | Crenicara punctulata | 9088 |
| Geophagus magdalena Brind, 1943 | Geophagus steindachneri | 36377 |
| Chromis magdalenae Lortet, 1883 | Tristramella simonis | 5712 |
| Haplochromis mahagiensis David & Poll, 1937 | Haplochromis mahagiensis | 4983 |
| Haplochromis mahagiensis (non David & Poll, 1937) | Haplochromis loati | 4983 |
| Ptychochromis mainty Martinez, Arroyave & Sparks, 2015 | Ptychochromis mainty | 105395 |
| Haplochromis maisomei van Oijen, 1991 | Haplochromis maisomei | 26282 |
| Ptychochromis makira Stiassny & Sparks, 2006 | Ptychochromis makira | 57663 |
| Haplochromis malacophagus Poll & Damas, 1939 | Haplochromis malacophagus | 4983 |
| Oreochromis malagarasi Trewavas, 1983 | Oreochromis malagarasi | 118638 |
| Haplochromis malagaraziensis David, 1937 | Orthochromis malagaraziensis | 28906 |
| Chromidotilapia mamonekenei Lamboj, 1999 | Chromidotilapia mamonekenei | 47111 |
| Heros managuensis Günther, 1867 | Parachromis managuensis | 36377 |
| Cichlasoma manana Miller, 1907 | Vieja maculicauda | 7335 |
| Crenicichla mandelburgeri Kullander, 2009 | Crenicichla mandelburgeri | 80386 |
| Haplochromis mandibularis Greenwood, 1962 | Haplochromis mandibularis | 4983 |
| Tilapia manyarae Hilgendorf, 1905 | Oreochromis amphimelas | 2 |
| Geophagus mapiritensis Fernández-Yépez, 1950 | Satanoperca mapiritensis | 36377 |
| Simochromis margaretae Axelrod & Harrison, 1978 | Pseudosimochromis margaretae | 107730 |
| Tilapia margaritacea Boulenger, 1916 | Coptodon margaritacea | 93285 |
| Labidochromis margaritae Johnson, 1976 | Labidochromis pallidus | 5653 |
| Heros margaritifer Günther, 1862 | Amphilophus margaritifer | 36377 |
| Paratilapia marginata Gilchrist & Thompson, 1917 | Sargochromis codringtonii | 5693 |
| Trematocara marginatum Boulenger, 1899 | Trematocara marginatum | 5708 |
| Acara marginatus Heckel, 1840 | Cichlasoma dimerus | 36377 |
| Haplochromis marginatus Trewavas, 1935 | Protomelas marginatus | 4996 |
| Lamprologus marginatus Boulenger, 1914 | Neolamprologus tetracanthus | 5667 |
| Lethrinops marginatus Ahl, 1926 | Lethrinops marginatus | 5595 |
| Simochromis marginatus Poll, 1956 | Pseudosimochromis marginatus | 107730 |
| Haplochromis marginatus vuae Trewavas, 1935 | Protomelas marginatus | 4996 |
| Aequidens mariae Eigenmann, 1922 | Bujurquina mariae | 36377 |
| Paratilapia mariae Holly, 1930 | Stomatepia mariae | 5698 |
| Tilapia mariae Boulenger, 1899 | Pelmatolapia mariae | 93285 |
| Tilapia mariae (non Boulenger, 1899) | Coptodon cameronensis | 5163 |
| Lamprologus markerti Tougas & Stiassny, 2014 | Lamprologus markerti | 97099 |
| Eretmodus marksmithi Burgess, 2012 | Eretmodus marksmithi | 92306 |
| Julidochromis marksmithi Burgess, 2014 | Julidochromis marksmithi | 115482 |
| Julidochromis marlieri Poll, 1956 | Julidochromis marlieri | 5651 |
| Spathodus marlieri Poll, 1950 | Spathodus marlieri | 5695 |
| Paretroplus maromandia Sparks & Reinthal, 1999 | Paretroplus maromandia | 39755 |
| Acara maronii Steindachner, 1881 | Cleithracara maronii | 36377 |
| Apistogramma martini Römer, Hahn, Römer, Soares & Wöhler, 2003 | Apistogramma martini | 50838 |
| Tilapia martini (non Boulenger, 1906) | Haplochromis ishmaeli | 4983 |
| Tilapia martini (non Boulenger, 1906) | Haplochromis nigripinnis | 4983 |
| Tilapia martini (non Boulenger, 1906) | Haplochromis eduardii | 4983 |
| Tilapia martini Boulenger, 1906 | Haplochromis martini | 4983 |
| Tilapia martini (non Boulenger, 1906) | Haplochromis engystoma | 4983 |
| Neolamprologus marunguensis Büscher, 1989 | Neolamprologus marunguensis | 74422 |
| Hemitilapia materfamilias Pellegrin, 1913 | Haplochromis bicolor | 5662 |
| Xenotilapia materfamilias Poll, 1943 | Xenotilapia boulengeri | 5717 |
| Labidochromis mathotho Burgess & Axelrod, 1976 | Labidochromis mathotho | 5653 |
| Australoheros mattosi Ottoni, 2012 | Australoheros mattosi | 89866 |
| Aequidens mauesanus Kullander, 1997 | Aequidens mauesanus | 26676 |
| Haplochromis maxillaris Trewavas, 1928 | Haplochromis maxillaris | 4983 |
| Aulonocara maylandi Trewavas, 1984 | Aulonocara maylandi | 4975 |
| Aulonocara maylandi (non Trewavas, 1984) | Aulonocara kandeense | 267 |
| Aulonocara maylandi kandeense Tawil & Allgayer, 1987 | Aulonocara kandeense | |
| Mazarunia mazarunii Kullander, 1990 | Mazarunia mazarunii | 26742 |
| Orthochromis mazimeroensis De Vos & Seegers, 1998 | Orthochromis mazimeroensis | 28906 |
| Copadichromis mbenjii Konings, 1990 | Copadichromis mbenjii | 4979 |
| Labidochromis mbenjii Lewis, 1982 | Labidochromis mbenjii | 5653 |
| Metriaclima mbenjii Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia mbenjii | 27596 |
| Mbipia mbipi Lippitsch & Bouton, 1998 | Haplochromis mbipi | 12750 |
| Placidochromis mbunoides Hanssens, 2004 | Placidochromis mbunoides | 55898 |
| Cichlasoma meeki Hildebrand, 1925 | Astatheros macracanthus | 36377 |
| Tilapia meeki Pellegrin, 1911 | Pelmatolapia mariae | 5163 |
| Lamprologus meeli Poll, 1948 | Lepidiolamprologus meeli | 5667 |
| Haplochromis megalops Greenwood & Gee, 1969 | Haplochromis megalops | 4983 |
| Bujurquina megalospilus Kullander, 1986 | Bujurquina megalospilus | 9088 |
| Apistogramma megaptera Mesa S. & Lasso, 2011 | Apistogramma megaptera | 89990 |
| Geophagus megasema Heckel, 1840 | Geophagus megasema | 36377 |
| Apistogramma megastoma Römer, Römer, Estivals, Vela Díaz, Duponchelle, Dávila, Hahn & Renno, 2017 | Apistogramma megastoma | 118051 |
| Apistogramma meinkeni Kullander, 1980 | Apistogramma meinkeni | 36377 |
| Gymnogeophagus mekinos Malabarba, Malabarba & Reis, 2015 | Gymnogeophagus mekinos | 118066 |
| Metriaclima melabranchion Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia zebra | 86864 |
| Stigmatochromis melanchros Stauffer, Cleaver-Yoder & Konings, 2011 | Stigmatochromis melanchros | 87930 |
| Chromidotilapia melaniae Lamboj, 2003 | Chromidotilapia melaniae | 50577 |
| Cichla melaniae Kullander & Ferreira, 2006 | Cichla melaniae | 57716 |
| Ectodus melanogenys Boulenger, 1898 | Xenotilapia melanogenys | 5632 |
| Haplotaxodon melanoides Poll, 1984 | Benthochromis melanoides | 5606 |
| Haplochromis melanonotus Regan, 1922 | Mylochromis melanonotus | 4995 |
| Tilapia melanopleura (non Duméril, 1861) | Pelmatolapia mariae | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon nyongana | 5163 |
| Tilapia melanopleura Duméril, 1861 | Coptodon zillii | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon discolor | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Pelmatolapia cabrae | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon louka | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Oreochromis aureus | 5166 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon rendalli | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon congica | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Tilapia busumana | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon walteri | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon cameronensis | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon tholloni | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon guineensis | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Tilapia brevimanus | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Tilapia sparrmanii | 5163 |
| Tilapia melanopleura (non Duméril, 1861) | Coptodon dageti | 5163 |
| Heros melanopogon Steindachner, 1864 | Vieja melanurus | 86887 |
| Haplochromis melanopterus Trewavas, 1928 | Haplochromis melanopterus | 4983 |
| Melanochromis melanopterus Trewavas, 1935 | Melanochromis melanopterus | 5663 |
| Haplochromis melanopus (non Regan, 1922) | Haplochromis cinereus | 4983 |
| Haplochromis melanopus Regan, 1922 | Haplochromis melanopus | 4983 |
| Pelmatochromis melanostigma Boulenger, 1906 | Callochromis melanostigma | 5608 |
| Haplochromis melanotaenia Regan, 1922 | Mylochromis melanotaenia | 267 |
| Sarotherodon melanotheron Rüppell, 1852 | Sarotherodon melanotheron | 4999 |
| Sarotherodon melanotheron paludinosus Trewavas, 1983 | Sarotherodon melanotheron | 72416 |
| Rhamphochromis melanotus Ahl, 1926 | Rhamphochromis esox | 55949 |
| Heros melanurus Günther, 1862 | Vieja melanurus | 36377 |
| Copadichromis melas Stauffer & Konings, 2006 | Copadichromis melas | 57549 |
| Etroplus meleagris Cuvier, 1830 | Etroplus suratensis | 6028 |
| Lamprologus meleagris Büscher, 1991 | Lamprologus meleagris | 12251 |
| Haplochromis melichrous Greenwood & Gee, 1969 | Haplochromis melichrous | 4983 |
| Paratilapia mellandi (non Boulenger, 1905) | Sargochromis codringtonii | 5693 |
| Paratilapia mellandi Boulenger, 1905 | Sargochromis mellandi | 5693 |
| Melanochromis mellitus Johnson, 1976 | Melanochromis melanopterus | 80784 |
| Paretroplus menarambo Allgayer, 1996 | Paretroplus menarambo | 78623 |
| Apistogramma mendezi Römer, 1994 | Apistogramma mendezi | 36377 |
| Crenicichla menezesi Ploeg, 1991 | Crenicichla menezesi | 36377 |
| Alticorpus mentale Stauffer & McKaye, 1988 | Alticorpus mentale | 5594 |
| Haplochromis mentatus Regan, 1925 | Haplochromis mentatus | 4983 |
| Genyochromis mento Trewavas, 1935 | Genyochromis mento | 5636 |
| Haplochromis mento Regan, 1922 | Haplochromis mento | 4983 |
| Heros mento Vaillant & Pellegrin, 1902 | Amphilophus istlanus | 36377 |
| Chromis menzalensis Mitchell, 1895 | Coptodon zillii | 5163 |
| Serranochromis meridianus Jubb, 1967 | Serranochromis meridianus | 7248 |
| Gymnogeophagus meridionalis Reis & Malabarba, 1988 | Gymnogeophagus meridionalis | 36377 |
| Aequidens metae Eigenmann, 1922 | Aequidens metae | 36377 |
| Aequidens michaeli Kullander, 1995 | Aequidens michaeli | 26647 |
| Haplochromis michaeli (non Trewavas, 1928) | Haplochromis empodisma | 4983 |
| Haplochromis michaeli Trewavas, 1928 | Haplochromis michaeli | 4983 |
| Haplochromis micrentodon Regan, 1922 | Lethrinops micrentodon | 267 |
| Chromis microcephalus Günther, 1862 | Sarotherodon melanotheron | 4999 |
| Haplochromis microcephalus Trewavas, 1935 | Nyassachromis microcephalus | 267 |
| Melanogenes microcephalus (non Bleeker, 1863) | Oreochromis schwebischi | 2 |
| Melanogenes microcephalus Bleeker, 1863 | Sarotherodon melanotheron | 4999 |
| Haplochromis microchrysomelas Snoeks, 1994 | Haplochromis microchrysomelas | 46152 |
| Callopharynx microdon Poll, 1948 | Cyclopharynx fwae | 5621 |
| Lethrinops microdon Eccles & Lewis, 1977 | Lethrinops microdon | 4985 |
| Pelmatochromis microdon Boulenger, 1906 | Haplochromis microdon | 4983 |
| Pelmatochromis microdon (non Boulenger, 1906) | Haplochromis maxillaris | 4983 |
| Tylochromis microdon (non Regan, 1920) | Tylochromis lateralis | 5714 |
| Tylochromis microdon (non Regan, 1920) | Tylochromis pulcher | 52346 |
| Tylochromis microdon Regan, 1920 | Tylochromis microdon | 5714 |
| Petrotilapia microgalana Ruffing, Lambert & Stauffer, 2006 | Petrotilapia microgalana | 78421 |
| Limnochromis microlepidotus Poll, 1956 | Cyprichromis microlepidotus | 5625 |
| Cichlasoma microlepis Dahl, 1960 | Chocoheros microlepis | 114771 |
| Haplotaxodon microlepis Boulenger, 1906 | Haplotaxodon microlepis | 5642 |
| Perissodus microlepis Boulenger, 1898 | Perissodus microlepis | 5678 |
| Tilapia microlepis Boulenger, 1899 | Boulengerochromis microlepis | 4976 |
| Heros microphthalmus Günther, 1862 | Chuco microphthalmus | 36377 |
| Haplochromis microstoma Regan, 1922 | Protomelas pleurotaenia | 267 |
| Lethrinops microstoma Trewavas, 1931 | Lethrinops microstoma | 4985 |
| Pseudotropheus microstoma Trewavas, 1935 | Tropheops microstoma | 79521 |
| Trematocranus microstoma Trewavas, 1935 | Trematocranus microstoma | 5709 |
| Chromis microstomus Lortet, 1883 | Sarotherodon galilaeus | 2 |
| Metriaclima midomo Stauffer, Black & Konings, 2013 | Maylandia midomo | 93436 |
| Astronotus mikoljii Lozano, Lasso-Alcalá, Bittencourt, Taphorn, Perez & Farias, 2022 | Astronotus mikoljii | 126783 |
| Cichlasoma milleri Meek, 1907 | Chuco microphthalmus | 7335 |
| Cyrtocara milomo Oliver, 1984 | Placidochromis milomo | 4994 |
| Placidochromis milomo Oliver, 1989 | Placidochromis milomo | 4994 |
| Lepidiolamprologus mimicus Schelly, Takahashi, Bills & Hori, 2007 | Lepidiolamprologus mimicus | 76873 |
| Cichlasoma minckleyi Kornfield & Taylor, 1983 | Herichthys minckleyi | 36377 |
| Apistogramma minima Mesa S. & Lasso, 2011 | Apistogramma minima | 89990 |
| Bathybates minor Boulenger, 1906 | Bathybates minor | 5605 |
| Nanochromis minor Roberts & Stewart, 1976 | Nanochromis minor | 5666 |
| Placidochromis minor Hanssens, 2004 | Placidochromis minor | 55898 |
| Australoheros minuano Říčan & Kullander, 2008 | Australoheros minuano | 74689 |
| Crenicichla minuano Lucena & Kullander, 1992 | Crenicichla minuano | 26688 |
| Acara minuta Hensel, 1870 | Geophagus brasiliensis | 36377 |
| Acara minuta (non Hensel, 1870) | Cichlasoma bimaculatum | 5723 |
| Placidochromis minutus Hanssens, 2004 | Placidochromis minutus | 55898 |
| Pseudotropheus minutus Fryer, 1956 | Chindongo minutus | 119465 |
| Geophagus mirabilis Deprá, Kullander, Pavanelli & Graça, 2014 | Geophagus mirabilis | 102658 |
| Cichla mirianae Kullander & Ferreira, 2006 | Cichla mirianae | 57716 |
| Mesonauta mirificus Kullander & Silfvergrip, 1991 | Mesonauta mirificus | 36377 |
| Crenicichla missioneira Lucena & Kullander, 1992 | Crenicichla missioneira | 36377 |
| Gymnogeophagus missioneiro Malabarba, Malabarba & Reis, 2015 | Gymnogeophagus missioneiro | 118066 |
| Haplochromis mloto Iles, 1960 | Copadichromis mloto | 267 |
| Apistogramma moae Kullander, 1980 | Apistogramma moae | 9088 |
| Lamprologus mocquardi Pellegrin, 1903 | Lamprologus mocquardi | 5654 |
| Hemichromis modestus Günther, 1894 | Stigmatochromis modestus | 267 |
| Heros modestus Heckel, 1840 | Heros spurius | 36377 |
| Lamprologus modestus Boulenger, 1898 | Neolamprologus modestus | 5667 |
| Lamprologus modestus (non Boulenger, 1898) | Neolamprologus mondabu | 5667 |
| Pseudotropheus modestus Johnson, 1974 | Tropheops modestus | 79521 |
| Lamprologus modestus nyassae Borodin, 1936 | Lamprologus callipterus | 5654 |
| Paratilapia moeruensis Boulenger, 1899 | Thoracochromis moeruensis | 4983 |
| Chromys moffatii Castelnau, 1861 | Tilapia sparrmanii | 5163 |
| Cichlasoma mojarra Meek, 1904 | Amphilophus trimaculatus | 36377 |
| Chetia mola Balon & Stewart, 1983 | Chetia mola | 5613 |
| Haplochromis mola Trewavas, 1935 | Mylochromis mola | 267 |
| Herichthys molango De la Maza-Benignos & Lozano-Vilano, 2013 | Herichthys molango | 126993 |
| Haplochromis mollis Trewavas, 1935 | Mylochromis mollis | 267 |
| Haplochromis molossus Vranken, Van Steenberge & Snoeks, 2019 | Haplochromis molossus | 127594 |
| Lamprologus mondabu Boulenger, 1906 | Neolamprologus mondabu | 5667 |
| Stomatepia mongo Trewavas, 1972 | Stomatepia mongo | 5698 |
| Crenicichla monicae Kullander & Varella, 2015 | Crenicichla monicae | 104137 |
| Cichla monoculus Agassiz, 1831 | Cichla monoculus | 36377 |
| Tilapia monodi Daget, 1954 | Oreochromis aureus | 2 |
| Leptolamprologus monogramma Pellegrin, 1927 | Teleogramma monogramma | 5703 |
| Teleocichla monogramma Kullander, 1988 | Teleocichla monogramma | 34233 |
| Australoheros montanus Ottoni, 2012 | Australoheros montanus | 89866 |
| Tilapia monteiri Boulenger, 1899 | Thoracochromis fasciatus | 4983 |
| Heros montezuma Heckel, 1840 | Herichthys deppii | 36377 |
| Cyrtocara moorii Boulenger, 1902 | Cyrtocara moorii | 5624 |
| Gephyrochromis moorii Boulenger, 1901 | Gephyrochromis moorii | 5637 |
| Lamprologus moorii Boulenger, 1898 | Variabilichromis moorii | 5667 |
| Tropheus moorii Boulenger, 1898 | Tropheus moorii | 5713 |
| Tropheus moorii kasabae Nelissen, 1977 | Tropheus kasabae | 5713 |
| Bujurquina moriorum Kullander, 1986 | Bujurquina moriorum | 9088 |
| Haplochromis mortimeri Bell-Cross, 1975 | Sargochromis mortimeri | 5693 |
| Tilapia mortimeri Trewavas, 1966 | Oreochromis mortimeri | 54096 |
| Orthochromis mosoensis De Vos & Seegers, 1998 | Orthochromis mosoensis | 28906 |
| Tilapia mossambica korogwe Lowe, 1955 | Oreochromis korogwe | 5166 |
| Metriaclima mossambicum Ciccotto, Konings & Stauffer, 2011 | Maylandia mossambica | 89336 |
| Chromis mossambicus (non Peters, 1852) | Sarotherodon nigripinnis | 4999 |
| Chromis mossambicus (non Peters, 1852) | Sarotherodon occidentalis | 2 |
| Chromis mossambicus Peters, 1852 | Oreochromis mossambicus | 5166 |
| Chromis mossambicus (non Peters, 1852) | Coptodon guineensis | 5163 |
| Chromis mossambicus (non Peters, 1852) | Coptodon zillii | 5163 |
| Oreochromis mossambicus bassamkhalafi Khalaf, 2009 | Oreochromis mossambicus | 84883 |
| Melanochromis mossambiquensis Konings-Dudin, Konings & Stauffer, 2009 | Melanochromis mossambiquensis | 80784 |
| Heros motaguensis Günther, 1867 | Parachromis motaguensis | 36377 |
| Orthochromis mporokoso Schedel, Vreven, Katemo Manda, Abwe, Chocha Manda & Schliewen, 2018 | Orthochromis mporokoso | 122085 |
| Melanochromis mpoto Konings & Stauffer, 2012 | Melanochromis mpoto | 89864 |
| Steatocranus mpozoensis Roberts & Stewart, 1976 | Steatocranus mpozoensis | 5696 |
| Chromidotilapia mrac Lamboj, 2002 | Chromidotilapia mrac | 47112 |
| Placidochromis msakae Hanssens, 2004 | Placidochromis msakae | 55898 |
| Crenicichla mucuryna Ihering, 1914 | Crenicichla mucuryna | 36377 |
| Chromis multicolor Schöller, 1903 | Pseudocrenilabrus multicolor | 5682 |
| Pseudocrenilabrus multicolor victoriae Seegers, 1990 | Pseudocrenilabrus multicolor | 5682 |
| Crenicichla multidens Steindachner, 1915 | Crenicichla scottii | 26688 |
| Paratilapia multidens Pellegrin, 1900 | Heterochromis multidens | 52307 |
| Plecodus multidentatus Poll, 1952 | Plecodus multidentatus | 5681 |
| Tilapia multifasciata macrostoma Pellegrin, 1941 | Sarotherodon melanotheron | 2 |
| Cichlasoma multifasciatum Regan, 1905 | Parachromis friedrichsthalii | 7335 |
| Cichlosoma multifasciatum Regan, 1905 | Parachromis friedrichsthalii | 36377 |
| Chromis multifasciatus Günther, 1903 | Sarotherodon galilaeus | 4999 |
| Lamprologus multifasciatus Boulenger, 1906 | Neolamprologus multifasciatus | 5667 |
| Pelmatochromis multiocellatus Boulenger, 1913 | Haplochromis multiocellatus | 4983 |
| Geophagus multiocellus Mattos & Costa, 2018 | Geophagus multiocellus | 119412 |
| Crenicichla multispinosa Pellegrin, 1903 | Crenicichla multispinosa | 26372 |
| Heros multispinosus Günther, 1867 | Herotilapia multispinosa | 114771 |
| Otopharynx mumboensis Oliver, 2018 | Otopharynx mumboensis | 119408 |
| Petrotilapia mumboensis Lundeba, Stauffer & Konings, 2011 | Petrotilapia mumboensis | 87181 |
| Haplochromis murakoze Coenen, Snoeks & Thys van den Audenaerde, 1984 | Haplochromis adolphifrederici | 13338 |
| Australoheros muriae Ottoni & Costa, 2008 | Australoheros muriae | 79631 |
| Lamprologus mustax Poll, 1978 | Neolamprologus mustax | 5667 |
| Tilapia mvogoi Thys van den Audenaerde, 1965 | Sarotherodon mvogoi | 2 |
| Myaka myaka Trewavas, 1972 | Myaka myaka | 4987 |
| Petenia myersi Schultz, 1944 | Caquetaia myersi | 36377 |
| Haplochromis mylergates Greenwood & Barel, 1978 | Haplochromis mylergates | 4983 |
| Haplochromis mylodon Greenwood, 1973 | Haplochromis mylodon | 4983 |
| Labidochromis mylodon Lewis, 1982 | Labidochromis mylodon | 5653 |
| Lethrinops mylodon Eccles & Lewis, 1979 | Lethrinops mylodon | 55463 |
| Tylochromis mylodon Regan, 1920 | Tylochromis mylodon | 5714 |
| Lethrinops mylodon borealis Eccles & Lewis, 1979 | Lethrinops mylodon | 55463 |
| Archocentrus myrnae Loiselle, 1997 | Amatitlania myrnae | 114771 |
| Tilapia nadinae Borodin, 1931 | Astatotilapia burtoni | 4983 |
| Chromidotilapia nana Lamboj, 2003 | Chromidotilapia nana | 50577 |
| Archocentrus nanoluteus Allgayer, 1994 | Amatitlania nanolutea | 114771 |
| Haplochromis nanoserranus Greenwood & Barel, 1978 | Haplochromis nanoserranus | 4983 |
| Crenicichla nanus Regan, 1913 | Crenicichla wallacii | 36377 |
| Acara nassa Heckel, 1840 | Acaronia nassa | 36377 |
| Xenotilapia nasus De Vos, Risch & Thys van den Audenaerde, 1995 | Xenotilapia nasus | 50515 |
| Ophthalmochromis nasutus Poll & Matthes, 1962 | Ophthalmotilapia nasuta | 5669 |
| Chromis natalensis Weber, 1897 | Oreochromis mossambicus | 2 |
| Pseudocrenilabrus natalensis Fowler, 1934 | Pseudocrenilabrus philander | 5682 |
| Oreochromis ndalalani Seegers & Tichy, 1999 | Oreochromis ndalalani | 126093 |
| Geophagus neambi Lucinda, Lucena & Assis, 2010 | Geophagus neambi | 84008 |
| Chromis nebulifera Günther, 1860 | Paraneetroplus nebulifer | 36377 |
| Neetroplus nematopus Günther, 1867 | Hypsophrys nematopus | 36377 |
| Batrachops nemopterus Fowler, 1940 | Crenicichla proteus | 9088 |
| Schwetzochromis neodon Poll, 1948 | Schwetzochromis neodon | 5691 |
| Pelmatochromis ngamensis Gilchrist & Thompson, 1917 | Serranochromis jallae | 128638 |
| Tilapia ngomoensis Pellegrin, 1913 | Pelmatolapia cabrae | 5163 |
| Etia nguti Schliewen & Stiassny, 2003 | Etia nguti | 93285 |
| Sparus nhoquunda Lacepède, 1802 | Crenicichla brasiliensis | 36377 |
| Heros nicaraguensis Günther, 1864 | Hypsophrys nicaraguensis | 36377 |
| Neetroplus nicaraguensis Gill, 1877 | Hypsophrys nematopus | 36377 |
| Paratilapia nicholsi Pellegrin, 1928 | Pseudocrenilabrus nicholsi | 5682 |
| Crenicichla nickeriensis Ploeg, 1987 | Crenicichla nickeriensis | 26372 |
| Acharnes niederleinii Holmberg, 1891 | Crenicichla niederleinii | 36377 |
| Centrarchus niger Jardine, 1843 | Hypselecara coryphaenoides | 36377 |
| Heros niger Heckel, 1840 | Hypselecara coryphaenoides | 36377 |
| Lamprologus niger Poll, 1956 | Neolamprologus niger | 5667 |
| Oreochromis niger Günther, 1894 | Oreochromis spilurus | 5166 |
| Petrotilapia nigra Marsh, 1983 | Petrotilapia nigra | 5597 |
| Tilapia nigrans Dunz & Schliewen, 2010 | Coptodon nigrans | 93285 |
| Astatotilapia nigrescens Pellegrin, 1909 | Haplochromis nigrescens | 4983 |
| Placidochromis nigribarbis Hanssens, 2004 | Placidochromis nigribarbis | 55898 |
| Heros nigricans Eigenmann, 1903 | Nandopsis tetracanthus | 36377 |
| Tilapia nigricans Boulenger, 1906 | Haplochromis nigricans | 4983 |
| Tilapia nigricans (non Boulenger, 1906) | Haplochromis nuchisquamulatus | 4983 |
| Trematocara nigrifrons Boulenger, 1906 | Trematocara nigrifrons | 5708 |
| Haplochromis nigripinnis Regan, 1921 | Haplochromis nigripinnis | 4983 |
| Paratilapia nigripinnis Boulenger, 1901 | Paracyprichromis nigripinnis | 5671 |
| Tilapia nigripinnis Guichenot, 1861 | Sarotherodon nigripinnis | 2 |
| Haplochromis nigritaeniatus Trewavas, 1935 | Nyassachromis nigritaeniatus | 267 |
| Cichlasoma nigritum Meek, 1907 | Vieja maculicauda | 7335 |
| Tyrannochromis nigriventer Eccles, 1989 | Tyrannochromis nigriventer | 5715 |
| Neolamprologus nigriventris Büscher, 1992 | Neolamprologus nigriventris | 56628 |
| Benitochromis nigrodorsalis Lamboj, 2001 | Benitochromis nigrodorsalis | 42576 |
| Metriaclima nigrodorsalis Stauffer, Black & Konings, 2013 | Maylandia nigrodorsalis | 93436 |
| Paratilapia nigrofasciata (non Pellegrin, 1900) | Pelmatochromis ocellifer | 5676 |
| Paratilapia nigrofasciata Pellegrin, 1900 | Pelmatochromis nigrofasciatus | 5676 |
| Heros nigrofasciatus Günther, 1867 | Amatitlania nigrofasciata | 36377 |
| Xenotilapia nigrolabiata Poll, 1951 | Xenotilapia nigrolabiata | 50515 |
| Cichla nigromaculata Jardine & Schomburgk, 1843 | Cichla nigromaculata | 57716 |
| Haplochromis nigroventralis Lohberger, 1929 | Haplochromis guiarti | 4983 |
| Apistogramma nijsseni Kullander, 1979 | Apistogramma nijsseni | 9088 |
| Crenicichla nijsseni Ploeg, 1991 | Crenicichla proteus | 36377 |
| Perca nilotica Linnaeus, 1758 | Oreochromis niloticus | 2 |
| Tilapia nilotica athiensis Boulenger, 1916 | Oreochromis spilurus | 2 |
| Tilapia nilotica exul Steinitz, 1951 | Oreochromis aureus | 5166 |
| Tilapia nilotica rukwaensis Hilgendorf & Pappenheim, 1903 | Oreochromis rukwaensis | 2 |
| Tilapia nilotica upembae Thys van den Audenaerde, 1964 | Oreochromis upembae | 2 |
| Haplochromis niloticus Greenwood, 1960 | Haplochromis niloticus | 4983 |
| Oreochromis niloticus baringoensis Trewavas, 1983 | Oreochromis niloticus | 2 |
| Oreochromis niloticus filoa Trewavas, 1983 | Oreochromis niloticus | 5166 |
| Oreochromis niloticus sugutae Trewavas, 1983 | Oreochromis niloticus | 5166 |
| Oreochromis niloticus tana Seyoum & Kornfield, 1992 | Oreochromis niloticus | 42341 |
| Haplochromis nitidus Trewavas, 1935 | Ctenopharynx nitidus | 267 |
| Lamprologus nkambae Staeck, 1978 | Lepidiolamprologus kendalli | 46829 |
| Haplochromis nkatae Iles, 1960 | Copadichromis nkatae | 267 |
| Placidochromis nkhatae Hanssens, 2004 | Placidochromis nkhatae | 55898 |
| Placidochromis nkhotakotae Hanssens, 2004 | Placidochromis nkhotakotae | 55898 |
| Metriaclima nkhunguensis Ciccotto, Konings & Stauffer, 2011 | Maylandia nkhunguensis | 86409 |
| Apistogramma norberti Staeck, 1991 | Apistogramma norberti | 36377 |
| Apistogramma nororientalis Mesa S. & Lasso, 2011 | Apistogramma nororientalis | 89990 |
| Centrarchus notatus Jardine, 1843 | Heros notatus | 36377 |
| Crenicichla notophthalmus Regan, 1913 | Crenicichla notophthalmus | 36377 |
| Paratilapia nototaenia Boulenger, 1902 | Buccochromis nototaenia | 267 |
| Lamena nourissati Allgayer, 1998 | Paretroplus nourissati | 40691 |
| Theraps nourissati Allgayer, 1989 | Wajpamheros nourissati | 114771 |
| Pseudotropheus novemfasciatus Regan, 1922 | Tropheops novemfasciatus | 79521 |
| Tilapia nubila Boulenger, 1906 | Haplochromis nubilus | 4983 |
| Chromis nuchisquamulatus Hilgendorf, 1888 | Haplochromis nuchisquamulatus | 4983 |
| Pseudoplesiops nudiceps Boulenger, 1899 | Nanochromis nudiceps | 5666 |
| Pseudoplesiops nudiceps (non Boulenger, 1899) | Congochromis dimidiatus | 5666 |
| Haplochromis nyanzae Greenwood, 1962 | Haplochromis nyanzae | 4983 |
| Christyella nyasana Trewavas, 1935 | Gephyrochromis moorii | 5637 |
| Aulonocara nyassae (non Regan, 1922) | Aulonocara guentheri | 4975 |
| Aulonocara nyassae Regan, 1922 | Aulonocara nyassae | 4975 |
| Petrochromis nyassae Boulenger, 1902 | Petrochromis polyodon | 5679 |
| Haplochromis nyererei Witte-Maas & Witte, 1985 | Haplochromis nyererei | 12750 |
| Tilapia nyirica Lönnberg, 1911 | Oreochromis spilurus | 2 |
| Tilapia nyongana Thys van den Audenaerde, 1971 | Coptodon nyongana | 93285 |
| Teleogramma obamaorum Stiassny & Alter, 2015 | Teleogramma obamaorum | 104438 |
| Pelmatochromis obesus Boulenger, 1906 | Haplochromis obesus | 4983 |
| Chromis obliquidens Hilgendorf, 1888 | Haplochromis obliquidens | 4983 |
| Cyathochromis obliquidens Trewavas, 1935 | Cyathochromis obliquidens | 5619 |
| Lamprologus obliquus Nichols & Griscom, 1917 | Lamprologus mocquardi | 5654 |
| Chromys oblonga Castelnau, 1855 | Australoheros facetus | 74689 |
| Heros oblongus Günther, 1867 | Chuco microphthalmus | 7335 |
| Chromys obscura Castelnau, 1855 | Geophagus obscurus | 36377 |
| Uaru obscurum Günther, 1862 | Uaru amphiacanthoides | 36377 |
| Labeotropheus obscurus Phiri & Pauers, 2023 | Labeotropheus obscurus | 128773 |
| Lamprologus obscurus Poll, 1978 | Neolamprologus obscurus | 5667 |
| Placidochromis obscurus Hanssens, 2004 | Placidochromis obscurus | 55898 |
| Haplochromis obtusidens Trewavas, 1928 | Haplochromis obtusidens | 4983 |
| Crenicichla obtusirostris Günther, 1862 | Crenicichla johanna | 9088 |
| Haplochromis obtusus Trewavas, 1935 | Mylochromis obtusus | 4986 |
| Tilapia occidentalis Daget, 1962 | Sarotherodon occidentalis | 2 |
| Haplochromis occultidens Snoeks, 1988 | Haplochromis occultidens | 58484 |
| Cichla ocellaris Bloch & Schneider, 1801 | Cichla ocellaris | 57716 |
| Boggiania ocellata Perugia, 1897 | Crenicichla semifasciata | 36377 |
| Julidochromis ocellatus Steindachner, 1909 | Lamprologus ocellatus | 5654 |
| Lamprologus ocellatus Poll, 1952 | Lamprologus kungweensis | 5654 |
| Lobotes ocellatus Agassiz, 1831 | Astronotus ocellatus | 36377 |
| Astronotus ocellatus zebra Pellegrin, 1904 | Astronotus ocellatus | 36377 |
| Pelmatochromis ocellifer Boulenger, 1899 | Pelmatochromis ocellifer | 5676 |
| Pelmatochromis ocellifer (non Boulenger, 1899) | Pelmatochromis nigrofasciatus | 5676 |
| Enantiopus ochrogenys Boulenger, 1914 | Xenotilapia ochrogenys | 5717 |
| Xenotilapia ochrogenys bathyphilus Poll, 1956 | Xenotilapia bathyphila | 5717 |
| Rocio ocotal Schmitter-Soto, 2007 | Rocio ocotal | 74403 |
| Heros octofasciatus Regan, 1903 | Rocio octofasciata | 74403 |
| Haplochromis oculatus Trewavas, 1935 | Buccochromis oculatus | 267 |
| Lethrinops oculatus Trewavas, 1931 | Lethrinops oculatus | 4985 |
| Guianacara oelemariensis Kullander & Nijssen, 1989 | Guianacara oelemariensis | 36377 |
| Bujurquina oenolaemus Kullander, 1987 | Bujurquina oenolaemus | 36377 |
| Chromis ogowensis Günther, 1896 | Coptodon tholloni | 5163 |
| Geophagus olfersi Gosse, 1976 | Geophagus brasiliensis | 26282 |
| Haplochromis oligacanthus Regan, 1922 | Haplochromis oligacanthus | 127080 |
| Tilapia oligacanthus Bleeker, 1868 | Ptychochromis oligacanthus | 5686 |
| Haplochromis oligolepis Lippitsch, 2003 | Haplochromis oligolepis | 52072 |
| Lamprologus olivaceous Brichard, 1989 | Neolamprologus olivaceous | 5667 |
| Haplochromis olivaceus Snoeks, de Vos, Coenen & Thys van den Audenaerde, 1990 | Haplochromis olivaceus | 4983 |
| Bujurquina omagua Rican & Ricanova, 2023 | Bujurquina omagua | 128854 |
| Neochromis omnicaeruleus Seehausen & Bouton, 1998 | Haplochromis omnicaeruleus | 12750 |
| Paraneetroplus omonti Allgayer, 1988 | Paraneetroplus gibbiceps | 36377 |
| Ptychochromis onilahy Stiassny & Sparks, 2006 | Ptychochromis onilahy | 57663 |
| Saraca opercularis Steindachner, 1875 | Biotoecus opercularis | 36377 |
| Chaetobranchus orbicularis Steindachner, 1875 | Chaetobranchopsis orbicularis | 36377 |
| Astronotus orbiculatus Haseman, 1911 | Astronotus ocellatus | 36377 |
| Placidochromis ordinarius Hanssens, 2004 | Placidochromis ordinarius | 55898 |
| Haplochromis oregosoma Greenwood, 1973 | Haplochromis oregosoma | 4983 |
| Cichlasoma orientale Kullander, 1983 | Cichlasoma orientale | 36377 |
| Cichlasoma orinocense Kullander, 1983 | Cichlasoma orinocense | 36377 |
| Cichla orinocensis Humboldt, 1821 | Cichla orinocensis | 57716 |
| Crenicichla ornata Regan, 1905 | Crenicichla lenticulata | 26135 |
| Apistogramma ornatipinnis Ahl, 1936 | Apistogramma steindachneri | 26372 |
| Lamprologus ornatipinnis Poll, 1949 | Lamprologus ornatipinnis | 5654 |
| Xenotilapia ornatipinnis Boulenger, 1901 | Xenotilapia ornatipinnis | 50515 |
| Cichlasoma ornatum Regan, 1905 | Mesoheros ornatus | 114771 |
| Cichlasoma ornatum gephyrum Eigenmann, 1922 | Mesoheros gephyrus | 114771 |
| Haplochromis ornatus Regan, 1922 | Eclectochromis ornatus | 267 |
| Julidochromis ornatus Boulenger, 1898 | Julidochromis ornatus | 5651 |
| Parananochromis ornatus Lamboj & Stiassny, 2003 | Parananochromis ornatus | 50579 |
| Parananochromis orsorum Lamboj, 2014 | Parananochromis orsorum | 97361 |
| Apistogramma ortegai Britzke, Oliveira & Kullander, 2014 | Apistogramma ortegai | 97388 |
| Bujurquina ortegai Kullander, 1986 | Bujurquina ortegai | 9088 |
| Haplochromis orthognathus Trewavas, 1935 | Caprichromis orthognathus | 4977 |
| Petrochromis orthognathus Matthes, 1959 | Petrochromis orthognathus | 5679 |
| Placidochromis orthognathus Hanssens, 2004 | Placidochromis orthognathus | 55898 |
| Haplochromis orthostoma Regan, 1922 | Haplochromis orthostoma | 12750 |
| Heterogramma ortmanni Eigenmann, 1912 | Apistogramma ortmanni | 26372 |
| Apistogramma ortmanni rupununi Fowler, 1914 | Apistogramma rupununi | 36377 |
| Limnochromis otostigma Regan, 1920 | Triglachromis otostigma | 5711 |
| Chromis ovalis Steindachner, 1866 | Tilapia sparrmanii | 5163 |
| Chromis ovalis Steindachner, 1866 | Pseudocrenilabrus philander | 5682 |
| Haplochromis ovatus Trewavas, 1935 | Otopharynx ovatus | 267 |
| Guianacara owroewefi Kullander & Nijssen, 1989 | Guianacara owroewefi | 36377 |
| Hemitilapia oxyrhynchus Boulenger, 1902 | Hemitilapia oxyrhynchus | 123477 |
| Haplochromis pachycephalus Greenwood, 1967 | Haplochromis pachycephalus | 4983 |
| Otopharynx pachycheilus Arnegard & Snoeks, 2001 | Otopharynx pachycheilus | 40031 |
| Trematocranus pachychilus Dierickx, Hanssens, Rusuwa & Snoeks, 2018 | Trematocranus pachychilus | 120598 |
| Mazarunia pala López-Fernández, Taphorn B. & Liverpool, 2012 | Mazarunia pala | 91746 |
| Palaeoplex palimpsest Schedel, Kupriyanov, Katongo & Schliewen, 2020 | Palaeoplex palimpsest | 122072 |
| Petrotilapia palingnathos Lundeba, Stauffer & Konings, 2011 | Petrotilapia palingnathos | 87181 |
| Tilapia pallida Boulenger, 1911 | Haplochromis pallidus | 4983 |
| Tilapia pallida (non Boulenger, 1911) | Haplochromis ishmaeli | 4983 |
| Acara pallidus Heckel, 1840 | Aequidens pallidus | 36377 |
| Labidochromis pallidus Lewis, 1982 | Labidochromis pallidus | 5653 |
| Placidochromis pallidus Hanssens, 2004 | Placidochromis pallidus | 55898 |
| Aequidens paloemeuensis Kullander & Nijssen, 1989 | Aequidens paloemeuensis | 26372 |
| Astatotilapia paludinosa Greenwood, 1980 | Haplochromis paludinosus | 4983 |
| Metriaclima pambazuko Stauffer, Black & Konings, 2013 | Maylandia pambazuko | 93436 |
| Herichthys pame De la Maza-Benignos & Lozano-Vilano, 2013 | Herichthys pame | 126993 |
| Neetroplus panamensis Meek & Hildebrand, 1913 | Panamius panamensis | 12965 |
| Vieja panamensis Fernández-Yépez, 1969 | Vieja maculicauda | 7335 |
| Thorichthys panchovillai Del Moral-Flores, López-Segovia & Hernández-Arellano, 2017 | Thorichthys panchovillai | 117866 |
| Haplochromis pancitrinus Mietes & Witte, 2010 | Haplochromis pancitrinus | 85523 |
| Apistogramma panduro Römer, 1997 | Apistogramma panduro | 36377 |
| Tilapia pangani Lowe, 1955 | Oreochromis jipe | 52331 |
| Otopharynx panniculus Oliver, 2018 | Otopharynx panniculus | 119408 |
| Apistogramma pantalone Römer, Römer, Soares & Hahn, 2006 | Apistogramma pantalone | 57916 |
| Cichlasoma pantostictum Taylor & Miller, 1983 | Herichthys pantostictus | 36377 |
| Xenotilapia papilio Büscher, 1990 | Xenotilapia papilio | 50515 |
| Geophagus pappaterra Heckel, 1840 | Satanoperca pappaterra | 36377 |
| Tilapia pappenheimi (non Pappenheim & Boulenger, 1914) | Haplochromis nigripinnis | 4983 |
| Tilapia pappenheimi (non Pappenheim & Boulenger, 1914) | Haplochromis eduardii | 4983 |
| Tilapia pappenheimi Boulenger, 1914 | Haplochromis pappenheimi | 128938 |
| Plecodus paradoxus Boulenger, 1898 | Perissodus paradoxus | 5681 |
| Pyxichromis paradoxus Lippitsch & Kaufman, 2003 | Haplochromis paradoxus | 127594 |
| Aequidens paraguayensis Eigenmann & Kennedy, 1903 | Bujurquina vittata | 36377 |
| Haplochromis paraguiarti Greenwood, 1967 | Haplochromis paraguiarti | 4983 |
| Australoheros paraibae Ottoni & Costa, 2008 | Australoheros paraibae | 79631 |
| Melanochromis parallelus Burgess & Axelrod, 1976 | Melanochromis loriae | 89864 |
| Cichlasoma paranaense Kullander, 1983 | Cichlasoma paranaense | 36377 |
| Haplochromis paraplagiostoma Greenwood & Gee, 1969 | Haplochromis paraplagiostoma | 4983 |
| Haplochromis pardalis Trewavas, 1935 | Nimbochromis polystigma | 55922 |
| Bujurquina pardus Arbour, Barriga Salazar & López-Fernández, 2014 | Bujurquina pardus | 96081 |
| Haplochromis pardus Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis pardus | 126312 |
| Nanochromis parilus Roberts & Stewart, 1976 | Nanochromis parilus | 5666 |
| Heros parma Günther, 1862 | Vieja fenestrata | 7335 |
| Geophagus parnaibae Staeck & Schindler, 2006 | Geophagus parnaibae | 57445 |
| Haplochromis paropius Greenwood & Gee, 1969 | Haplochromis paropius | 4983 |
| Haplochromis parorthostoma Greenwood, 1967 | Haplochromis parorthostoma | 12750 |
| Apistogramma parva Ahl, 1931 | Apistogramma agassizii | 36377 |
| Lethrinops parvidens Trewavas, 1931 | Lethrinops parvidens | 4985 |
| Paratilapia parvidens Boulenger, 1911 | Haplochromis parvidens | 4983 |
| Copadichromis parvus Stauffer & Konings, 2006 | Copadichromis parvus | 57549 |
| Cichlasoma pasionis Rivas, 1962 | Thorichthys pasionis | 36377 |
| Chromis paterfamilias Lortet, 1876 | Tristramella sacra | 13609 |
| Chromis paterfamilias (non Lortet, 1876) | Tristramella simonis | 13609 |
| Aequidens patricki Kullander, 1984 | Aequidens patricki | 9088 |
| Haplochromis paucidens Regan, 1921 | Haplochromis paucidens | 4983 |
| Haplochromis paucidens (non Regan, 1921) | Haplochromis occultidens | 4983 |
| Apistogramma paucisquamis Kullander & Staeck, 1988 | Apistogramma paucisquamis | 36377 |
| Apistogramma paulmuelleri Römer, Beninde, Duponchelle, Dávila, Díaz & Renno, 2013 | Apistogramma paulmuelleri | 93321 |
| Cyprichromis pavo Büscher, 1994 | Cyprichromis pavo | 46826 |
| Sparus pavo Lacepède, 1802 | Crenicichla saxatilis | 36377 |
| Heros pavonaceus Garman, 1881 | Herichthys cyanoguttatus | 36377 |
| Scarus pavoninus Gronow, 1854 | Crenicichla saxatilis | 36377 |
| Apistogramma payaminonis Kullander, 1986 | Apistogramma payaminonis | 9088 |
| Hemichromis paynei Loiselle, 1979 | Rubricatochromis paynei | 128620 |
| Herichthys pearsei Hubbs, 1936 | Cincelichthys pearsei | 104176 |
| Alticorpus pectinatum Stauffer & McKaye, 1988 | Alticorpus peterdaviesi | 55908 |
| Ctenochromis pectoralis Pfeffer, 1893 | Ctenochromis pectoralis | 127080 |
| Neolamprologus pectoralis Büscher, 1991 | Neolamprologus pectoralis | 56628 |
| Apistogramma pedunculata Mesa S. & Lasso, 2011 | Apistogramma pedunculata | 89990 |
| Haplochromis pelagicus Vranken, Van Steenberge, Mbalassa & Snoeks, 2023 | Haplochromis pelagicus | 128938 |
| Gymnogeophagus peliochelynion Turcati, Serra-Alanis & Malabarba, 2018 | Gymnogeophagus peliochelynion | 123558 |
| Crenicichla pellegrini Ploeg, 1991 | Crenicichla pellegrini | 36377 |
| Geophagus pellegrini Regan, 1912 | Geophagus pellegrini | 36377 |
| Haplochromis pellegrini Regan, 1922 | Haplochromis pellegrini | 4983 |
| Pelmatochromis pellegrini Boulenger, 1903 | Chromidotilapia guntheri | 5616 |
| Hoplarchus pentacanthus Kaup, 1860 | Hoplarchus psittacus | 36377 |
| Tilapia percivali Boulenger, 1912 | Oreochromis spilurus | 5166 |
| Crenicichla percna Kullander, 1991 | Crenicichla percna | 26750 |
| Haplochromis percoides (non Boulenger, 1906) | Haplochromis acidens | 4983 |
| Haplochromis percoides (non Boulenger, 1906) | Haplochromis flavipinnis | 4983 |
| Haplochromis percoides Boulenger, 1906 | Haplochromis percoides | 4983 |
| Haplochromis percoides (non Boulenger, 1906) | Haplochromis nigrescens | 4983 |
| Australoheros perdi Ottoni, Lezama, Triques, Fragoso-Moura, Lucas & Barbosa, 2011 | Australoheros perdi | 87295 |
| Bujurquina peregrinabunda Kullander, 1986 | Bujurquina peregrinabunda | 9088 |
| Otopharynx peridodeka Oliver, 2018 | Otopharynx peridodeka | 119408 |
| Melanochromis perileucos Bowers & Stauffer, 1997 | Pseudotropheus perileucos | 89864 |
| Limnochromis permaxillaris David, 1936 | Gnathochromis permaxillaris | 5638 |
| Tilapia perrieri Pellegrin, 1909 | Haplochromis perrieri | 4983 |
| Iranocichla persa Esmaeili, Sayyadzadeh & Seehausen, 2016 | Iranocichla persa | 120698 |
| Apistogramma personata Kullander, 1980 | Apistogramma personata | 36377 |
| Lestradea perspicax Poll, 1943 | Lestradea perspicax | 5656 |
| Melanochromis perspicax (non Trewavas, 1935) | Iodotropheus sprengerae | 5649 |
| Melanochromis perspicax Trewavas, 1935 | Pseudotropheus perspicax | 5663 |
| Apistogramma pertense bitaeniata Pellegrin, 1936 | Apistogramma bitaeniata | 9088 |
| Trematocranus peterdaviesi Burgess & Axelrod, 1973 | Alticorpus peterdaviesi | 5594 |
| Krobia petitella Steele, Liverpool & López-Fernández, 2013 | Krobia petitella | 93940 |
| Paretroplus petiti Pellegrin, 1929 | Paretroplus petiti | 5675 |
| Lamprologus petricola Poll, 1949 | Neolamprologus petricola | 5667 |
| Lamprologus petricola (non Poll, 1949) | Neolamprologus mustax | 5667 |
| Haplochromis petronius Greenwood, 1973 | Haplochromis pharyngalis | 128436 |
| Paratilapia pfefferi Boulenger, 1898 | Gnathochromis pfefferi | 5638 |
| Metriaclima phaeos Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia phaeos | 27596 |
| Crenicichla phaiospilus Kullander, 1991 | Crenicichla phaiospilus | 26750 |
| Haplochromis pharyngalis Poll & Damas, 1939 | Haplochromis pharyngalis | 128436 |
| Haplochromis pharyngomylus Regan, 1929 | Haplochromis pharyngomylus | 4983 |
| Haplochromis phenochilus Trewavas, 1935 | Placidochromis phenochilus | 79521 |
| Chromis philander Weber, 1897 | Pseudocrenilabrus philander | 5682 |
| Haplochromis philander dispersus Trewavas, 1936 | Pseudocrenilabrus philander | 5682 |
| Haplochromis pholidophorus Trewavas, 1935 | Stigmatochromis pholidophorus | 267 |
| Haplochromis phytophagus Greenwood, 1966 | Haplochromis phytophagus | 4983 |
| Apistogramma piaroa Mesa S. & Lasso, 2011 | Apistogramma piaroa | 89990 |
| Apistogramma piauiensis Kullander, 1980 | Apistogramma piauiensis | 36377 |
| Haplochromis piceatus Greenwood & Gee, 1969 | Haplochromis piceatus | 4983 |
| Haplochromis pictus Trewavas, 1935 | Ctenopharynx pictus | 267 |
| Stomatepia pindu Trewavas, 1972 | Stomatepia pindu | 5698 |
| Cichla pinima Kullander & Ferreira, 2006 | Cichla pinima | 57716 |
| Cichla piquiti Kullander & Ferreira, 2006 | Cichla piquiti | 57716 |
| Haplochromis pitmani Fowler, 1936 | Haplochromis pitmani | 4983 |
| Tilapia placida Trewavas, 1941 | Oreochromis placidus | 2 |
| Tilapia placida (non Trewavas, 1941) | Oreochromis shiranus | 2 |
| Haplochromis placodon Regan, 1922 | Trematocranus placodon | 267 |
| Haplochromis placodus Poll & Damas, 1939 | Haplochromis placodus | 4983 |
| Haplochromis placodus (non Poll & Damas, 1939) | Haplochromis adolphifrederici | 4983 |
| Haplochromis plagiodon Regan & Trewavas, 1928 | Haplochromis plagiodon | 4983 |
| Haplochromis plagiostoma Regan, 1922 | Haplochromis plagiostoma | 4983 |
| Haplochromis plagiotaenia Regan, 1922 | Mylochromis plagiotaenia | 267 |
| Aequidens plagiozonatus Kullander, 1984 | Aequidens plagiozonatus | 36377 |
| Haplochromis planus Vranken, Van Steenberge & Snoeks, 2020 | Haplochromis planus | 126074 |
| Placidochromis platyrhynchos Hanssens, 2004 | Placidochromis platyrhynchos | 55898 |
| Apistogramma playayacu Römer, Beninde & Hahn, 2011 | Apistogramma playayacu | 88922 |
| Cichla pleiozona Kullander & Ferreira, 2006 | Cichla pleiozona | 57716 |
| Lamprologus pleuromaculatus Trewavas & Poll, 1952 | Neolamprologus pleuromaculatus | 5667 |
| Tilapia pleuromelas (non Duméril, 1861) | Sarotherodon occidentalis | 2 |
| Tilapia pleuromelas Duméril, 1861 | Sarotherodon galilaeus | 4999 |
| Haplochromis pleurospilus Trewavas, 1935 | Stigmatochromis pleurospilus | 267 |
| Pelmatochromis pleurospilus (non Boulenger, 1906) | Tylochromis polylepis | 5714 |
| Pelmatochromis pleurospilus Boulenger, 1906 | Callochromis pleurospilus | 5608 |
| Simochromis pleurospilus Nelissen, 1978 | Pseudosimochromis babaulti | 107730 |
| Haplochromis pleurostigma Trewavas, 1935 | Copadichromis pleurostigma | 4979 |
| Lamprologus pleurostigma Boulenger, 1914 | Lepidiolamprologus attenuatus | 5655 |
| Lamprologus pleurostigma (non Boulenger, 1914) | Lepidiolamprologus elongatus | 5655 |
| Haplochromis pleurostigmoides Iles, 1960 | Copadichromis pleurostigmoides | 267 |
| Heterogramma pleurotaenia Regan, 1909 | Apistogramma pleurotaenia | 36377 |
| Tilapia pleurotaenia (non Boulenger, 1901) | Mylochromis plagiotaenia | 267 |
| Tilapia pleurotaenia Boulenger, 1901 | Protomelas pleurotaenia | 267 |
| Tilapia pleurotaenia (non Boulenger, 1901) | Protomelas macrodon | 4996 |
| Tilapia pleurotaenia (non Boulenger, 1901) | Otopharynx selenurus | 267 |
| Crenicichla ploegi Varella, Loeb, Lima & Kullander, 2018 | Crenicichla ploegi | 119086 |
| Haplochromis plutonius Greenwood & Barel, 1978 | Haplochromis plutonius | 4983 |
| Paratilapia polleni Bleeker, 1868 | Paratilapia polleni | 5674 |
| Haplochromis polli Thys van den Audenaerde, 1964 | Haplochromis polli | 127080 |
| Labrochromis polli Daget, 1952 | Gobiocichla wonderi | 5639 |
| Lethrinops polli Burgess & Axelrod, 1973 | Placidochromis polli | 55898 |
| Oxylapia polli Kiener & Maugé, 1966 | Oxylapia polli | 5670 |
| Tropheus polli Axelrod, 1977 | Tropheus polli | 5713 |
| Tilapia polyacanthus Boulenger, 1899 | Orthochromis polyacanthus | 4983 |
| Paretroplus polyactis Bleeker, 1878 | Paretroplus polyactis | 5675 |
| Tilapia polycentra Duméril, 1861 | Coptodon guineensis | 5163 |
| Pelmatochromis polylepis Boulenger, 1900 | Tylochromis polylepis | 5714 |
| Haplochromis polyodon (non Trewavas, 1935) | Tyrannochromis nigriventer | 267 |
| Haplochromis polyodon Trewavas, 1935 | Tyrannochromis polyodon | 267 |
| Paratilapia polyodon Boulenger, 1909 | Haplochromis retrodens | 5648 |
| Pelmatochromis polyodon Boulenger, 1902 | Heterochromis multidens | 52307 |
| Petrochromis polyodon (non Boulenger, 1898) | Petrochromis fasciolatus | 5679 |
| Petrochromis polyodon Boulenger, 1898 | Petrochromis polyodon | 5679 |
| Crenicichla polysticta Hensel, 1870 | Crenicichla punctata | 36377 |
| Haplochromis polystigma Regan, 1922 | Nimbochromis polystigma | 267 |
| Chalinochromis popelini Brichard, 1989 | Chalinochromis popelini | 5610 |
| Cichlasoma popenoei Carr & Giovannoli, 1950 | Cribroheros longimanus | 7335 |
| Acara portalegrensis (non Hensel, 1870) | Cichlasoma bimaculatum | 1672 |
| Acara portalegrensis Hensel, 1870 | Cichlasoma portalegrense | 36377 |
| Aequidens potaroensis (non Eigenmann, 1912) | Krobia guianensis | 12251 |
| Aequidens potaroensis Eigenmann, 1912 | Aequidens potaroensis | 36377 |
| Tilapia pra Dunz & Schliewen, 2010 | Tilapia pra | 93285 |
| Tylochromis praecox Stiassny, 1989 | Tylochromis praecox | 52346 |
| Haplochromis praeorbitalis Regan, 1922 | Taeniolethrinops praeorbitalis | 267 |
| Crenicara praetoriusi Weise, 1935 | Dicrossus maculatus | 36377 |
| Crenicara praetoriusi Ahl, 1936 | Dicrossus maculatus | |
| Herichthys pratinus De la Maza-Benignos & Lozano-Vilano, 2013 | Herichthys pratinus | 126993 |
| Crenicichla prenda Lucena & Kullander, 1992 | Crenicichla prenda | 26688 |
| Teleocichla preta Varella, Zuanon, Kullander & López-Fernández, 2016 | Teleocichla preta | 108975 |
| Teleocichla prionogenys Kullander, 1988 | Teleocichla prionogenys | 34233 |
| Lamprologus prochilus Bailey & Stewart, 1977 | Neolamprologus prochilus | 5667 |
| Haplochromis prodromus Trewavas, 1935 | Haplochromis prodromus | 4983 |
| Alticorpus profundicola Stauffer & McKaye, 1988 | Alticorpus profundicola | 5594 |
| Lamprologus profundicola Poll, 1949 | Lepidiolamprologus profundicola | 5655 |
| Paratilapia prognatha (non Pellegrin, 1904) | Haplochromis serranus | 4983 |
| Paratilapia prognatha (non Pellegrin, 1904) | Haplochromis maculipinna | 4983 |
| Paratilapia prognatha (non Pellegrin, 1904) | Haplochromis xenostoma | 4983 |
| Paratilapia prognatha Pellegrin, 1904 | Haplochromis prognathus | 4983 |
| Paratilapia prognatha (non Pellegrin, 1904) | Haplochromis pellegrini | 4983 |
| Teleocichla proselytus Kullander, 1988 | Teleocichla proselytus | 34233 |
| Haplochromis prostoma Trewavas, 1935 | Nyassachromis prostoma | 267 |
| Crenicichla proteus Cope, 1872 | Crenicichla proteus | 9088 |
| Crenicichla proteus argynnis Cope, 1872 | Crenicichla proteus | 9088 |
| Chromys proxima Castelnau, 1855 | Geophagus proximus | 36377 |
| Apistogramma psammophila Staeck & Schindler, 2019 | Apistogramma psammophila | 119677 |
| Sciaenochromis psammophilus Konings, 1993 | Sciaenochromis psammophilus | 40899 |
| Gymnogeophagus pseudolabiatus Malabarba, Malabarba & Reis, 2015 | Gymnogeophagus pseudolabiatus | 118066 |
| Haplochromis pseudopellegrini Greenwood, 1967 | Haplochromis pseudopellegrini | 4983 |
| Heros psittacus Heckel, 1840 | Hoplarchus psittacus | 12965 |
| Crenicichla pterogramma Fowler, 1914 | Crenicichla alta | 36377 |
| Haplochromis ptistes Greenwood & Barel, 1978 | Haplochromis ptistes | 4983 |
| Apistogrammoides pucallpaensis Meinken, 1965 | Apistogrammoides pucallpaensis | 9088 |
| Congochromis pugnatus Stiassny & Schliewen, 2007 | Congochromis pugnatus | 72415 |
| Pelmatochromis pulcher Boulenger, 1901 | Pelvicachromis pulcher | 5677 |
| Pelmatochromis pulcher (non Boulenger, 1901) | Pelvicachromis roloffi | 5677 |
| Tylochromis pulcher Stiassny, 1989 | Tylochromis pulcher | 52346 |
| Apistogramma pulchra Kullander, 1980 | Apistogramma pulchra | 36377 |
| Cychlasoma pulchrum Gill, 1858 | Andinoacara pulcher | 36377 |
| Cynotilapia pulpican Tawil, 2002 | Maylandia pulpican | 79521 |
| Crenicichla punctata Hensel, 1870 | Crenicichla punctata | 36377 |
| Crenicichla punctata (non Hensel, 1870) | Crenicichla lacustris | 26282 |
| Cichlasoma punctatum Meek, 1909 | Talamancaheros underwoodi | 114771 |
| Acara punctulatus Günther, 1863 | Crenicara punctulata | |
| Batrachops punctulatus Regan, 1905 | Crenicichla reticulata | 36377 |
| Pundamilia pundamilia Seehausen & Bouton, 1998 | Haplochromis pundamilia | 12750 |
| Haplochromis purpurans Trewavas, 1935 | Nyassachromis purpurans | 267 |
| Pseudotropheus purpuratus Johnson, 1976 | Pseudotropheus purpuratus | 5684 |
| Pseudotropheus pursus Stauffer, 1991 | Maylandia lanisticola | 119491 |
| Cichlasoma pusillum Kullander, 1983 | Cichlasoma pusillum | 36377 |
| Crenicichla pydanielae Ploeg, 1991 | Crenicichla pydanielae | 36377 |
| Geophagus pygmaeus Hensel, 1870 | Gymnogeophagus gymnogenys | 36377 |
| Petrotilapia pyroscelos Lundeba, Stauffer & Konings, 2011 | Petrotilapia pyroscelos | 87181 |
| Pseudocrenilabrus pyrrhocaudalis Katongo, Seehausen & Snoeks, 2017 | Pseudocrenilabrus pyrrhocaudalis | 114630 |
| Haplochromis pyrrhocephalus Witte & Witte-Maas, 1987 | Haplochromis pyrrhocephalus | 4983 |
| Haplochromis pyrrhopteryx van Oijen, 1991 | Haplochromis pyrrhopteryx | 42172 |
| Metriaclima pyrsonotos Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia pyrsonotos | 79558 |
| Haplochromis quadrimaculatus (non Regan, 1922) | Copadichromis mbenjii | 4979 |
| Haplochromis quadrimaculatus Regan, 1922 | Copadichromis quadrimaculatus | 267 |
| Nannacara quadrispinae Staeck & Schindler, 2004 | Nannacara quadrispinae | 55920 |
| Haplochromis quasimodo Vranken, Van Steenberge, Heyle, Decru & Snoeks, 2022 | Haplochromis quasimodo | 126312 |
| Apistogramma ramirezi Myers & Harry, 1948 | Mikrogeophagus ramirezi | 36377 |
| Cichlasoma ramsdeni Fowler, 1938 | Nandopsis ramsdeni | 36377 |
| Tilapia rangii Duméril, 1861 | Sarotherodon melanotheron | 4999 |
| Haplochromis rebeli Lohberger, 1929 | Haplochromis prognathus | 4983 |
| Acara rectangularis Steindachner, 1864 | Chuco intermedium | 36377 |
| Apistogramma regani Kullander, 1980 | Apistogramma regani | 36377 |
| Cichlasoma regani Miller, 1974 | Maskaheros regani | 7335 |
| Crenicichla regani Ploeg, 1989 | Crenicichla regani | 36377 |
| Julidochromis regani Poll, 1942 | Julidochromis regani | 5651 |
| Pelmatochromis regani Pellegrin, 1906 | Chromidotilapia regani | 59155 |
| Tilapia regani Poll, 1932 | Oreochromis niloticus | 5166 |
| Tylochromis regani Stiassny, 1989 | Tylochromis regani | 5714 |
| Apistogramma reitzigi Mitsch, 1938 | Apistogramma borellii | 36377 |
| Haplochromis relictidens Vranken, Van Steenberge & Snoeks, 2019 | Haplochromis relictidens | 127594 |
| Lufubuchromis relictus Schedel, Kupriyanov, Katongo & Schliewen, 2020 | Lufubuchromis relictus | 122072 |
| Chromis rendalli Boulenger, 1897 | Coptodon rendalli | 5163 |
| Apistogramma resticulosa Kullander, 1980 | Apistogramma resticulosa | 36377 |
| Batrachops reticulatus Heckel, 1840 | Crenicichla reticulata | 9088 |
| Lamprologus reticulatus Boulenger, 1906 | Lamprologus callipterus | 5654 |
| Paratilapia retrodens (non Hilgendorf, 1888) | Haplochromis prodromus | 4983 |
| Paratilapia retrodens Hilgendorf, 1888 | Haplochromis retrodens | 5648 |
| Paratilapia retrodens (non Hilgendorf, 1888) | Haplochromis crassilabris | 4983 |
| Haplochromis rex Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis rex | 126312 |
| Geophagus rhabdotus Hensel, 1870 | Gymnogeophagus rhabdotus | 36377 |
| Tilapia rheophila Daget, 1962 | Coptodon rheophila | 93285 |
| Tilapia rheophila (non Daget, 1962) | Coptodon louka | 5163 |
| Haplochromis rheophilus Poll, 1948 | Schwetzochromis neodon | 13455 |
| Haplochromis rheophilus Thys van den Audenaerde, 1963 | Orthochromis torrenticola | 4983 |
| Theraps rheophilus Seegers & Staeck, 1985 | Rheoheros lentiginosus | 36377 |
| Chilotilapia rhoadesii Boulenger, 1908 | Chilotilapia rhoadesii | 5615 |
| Paratilapia rhoadesii Boulenger, 1908 | Buccochromis rhoadesii | 267 |
| Paratilapia rhoadesii (non Boulenger, 1908) | Buccochromis lepturus | 267 |
| Pelmatochromis rhodostigma Boulenger, 1906 | Callochromis pleurospilus | 5608 |
| Satanoperca rhynchitis Kullander, 2012 | Satanoperca rhynchitis | 90072 |
| Cichlasoma rhytisma López S., 1983 | Cribroheros rhytisma | 114771 |
| Australoheros ribeirae Ottoni, Oyakawa & Costa, 2008 | Australoheros ribeirae | 75696 |
| Nanochromis riomuniensis Thys van den Audenaerde, 1981 | Benitochromis riomuniensis | 39874 |
| Pelmatochromis riponianus (non Boulenger, 1911) | Haplochromis saxicola | 4983 |
| Pelmatochromis riponianus Boulenger, 1911 | Haplochromis riponianus | 4983 |
| Heterogramma ritense Haseman, 1911 | Apistogramma borellii | 36377 |
| Chromis rivulata Günther, 1860 | Andinoacara rivulatus | 93151 |
| Astatotilapia roberti Pellegrin, 1913 | Haplochromis nigrescens | 4983 |
| Nanochromis robertsi Thys van den Audenaerde & Loiselle, 1971 | Limbochromis robertsi | 5657 |
| Tylochromis robertsi Stiassny, 1989 | Tylochromis robertsi | 52346 |
| Cichlasoma robertsoni Regan, 1905 | Cribroheros robertsoni | 36377 |
| Bujurquina robusta Kullander, 1986 | Bujurquina robusta | 9088 |
| Australoheros robustus Ottoni & Costa, 2008 | Australoheros robustus | 79631 |
| Chaetobranchus robustus Günther, 1862 | Chaetobranchus flavescens | 26372 |
| Congochromis robustus Lamboj, 2012 | Congochromis robustus | 91055 |
| Hemichromis robustus Günther, 1864 | Serranochromis robustus | 5693 |
| Melanochromis robustus Johnson, 1985 | Melanochromis robustus | 5663 |
| Pelmatochromis robustus Gilchrist & Thompson, 1917 | Sargochromis giardi | 5693 |
| Hemichromis rolandi Sauvage, 1881 | Rubricatochromis letourneuxi | 5644 |
| Pelmatochromis roloffi Thys van den Audenaerde, 1968 | Pelvicachromis roloffi | 5677 |
| Acaropsis rondoni Miranda Ribeiro, 1918 | Aequidens rondoni | 36377 |
| Heterogramma rondoni Miranda Ribeiro, 1918 | Apistogramma borellii | 36377 |
| Apistogramma roraimae Kullander, 1980 | Apistogramma gibbiceps | 36377 |
| Crenicichla rosemariae Kullander, 1997 | Crenicichla rosemariae | 26135 |
| Apistogramma rositae Römer, Römer & Hahn, 2006 | Apistogramma rositae | 57916 |
| Tilapia rostrata Boulenger, 1899 | Fossorochromis rostratus | 267 |
| Aulonocara rostratum Trewavas, 1935 | Aulonocara rostratum | 4975 |
| Centrarchus rostratus Jardine, 1843 | Acaronia nassa | 9088 |
| Heros rostratus Gill, 1877 | Cribroheros rostratus | 36377 |
| Placidochromis rotundifrons Hanssens, 2004 | Placidochromis rotundifrons | 55898 |
| Microdontochromis rotundiventralis Takahashi, Yanagisawa & Nakaya, 1997 | Xenotilapia rotundiventralis | 26454 |
| Leptotilapia rouxi Pellegrin, 1928 | Steatocranus rouxi | 5696 |
| Haplochromis rubescens Snoeks, 1994 | Haplochromis rubescens | 46152 |
| Labeotropheus rubidorsalis Phiri & Pauers, 2023 | Labeotropheus rubidorsalis | 128773 |
| Lithochromis rubripinnis Seehausen, Lippitsch & Bouton, 1998 | Haplochromis rubripinnis | 12750 |
| Orthochromis rubrolabialis De Vos & Seegers, 1998 | Orthochromis rubrolabialis | 28906 |
| Pelvicachromis rubrolabiatus Lamboj, 2004 | Wallaceochromis rubrolabiatus | 110229 |
| Apistogramma rubrolineata Hein, Zarske & Zapata, 2002 | Apistogramma rubrolineata | 48504 |
| Cychla rubroocellata Jardine & Schomburgk, 1843 | Astronotus ocellatus | 36377 |
| Tilapia rubropunctata Boulenger, 1899 | Shuja horei | 4983 |
| Haplochromis rudolfianus Trewavas, 1933 | Haplochromis rudolfianus | 4983 |
| Neochromis rufocaudalis Seehausen & Bouton, 1998 | Haplochromis rufocaudalis | 12750 |
| Geophagus rufomarginatus Mattos & Costa, 2018 | Geophagus rufomarginatus | 119412 |
| Lithochromis rufus Seehausen & Lippitsch, 1998 | Haplochromis rufus | 12750 |
| Orthochromis rugufuensis De Vos & Seegers, 1998 | Orthochromis rugufuensis | 28906 |
| Tilapia rumsayi Gilchrist & Thompson, 1917 | Pharyngochromis darlingi | 5596 |
| Cichla rutilens Jardine, 1843 | Crenicichla lugubris | |
| Cychla rutilens Jardine, 1843 | Crenicichla lugubris | 26135 |
| Tilapia ruvumae Trewavas, 1966 | Oreochromis placidus | 5166 |
| Pelmatochromis ruweti Poll & Thys van den Audenaerde, 1965 | Tilapia ruweti | 5163 |
| Nanochromis sabinae Lamboj, 2005 | Congochromis sabinae | 54511 |
| Hemichromis sacra Günther, 1865 | Tristramella sacra | 5712 |
| Pelvicachromis sacrimontis Paulo, 1977 | Pelvicachromis sacrimontis | 119364 |
| Amphilophus sagittae Stauffer & McKaye, 2002 | Amphilophus sagittae | 36377 |
| Hemichromis saharae Sauvage, 1880 | Rubricatochromis saharae | 111245 |
| Cichlasoma sajica Bussing, 1974 | Amatitlania sajica | 114771 |
| Tilapia saka Lowe, 1953 | Oreochromis saka | 2 |
| Tilapia salinicola Poll, 1948 | Oreochromis salinicola | 2 |
| Apistogramma salpinction Kullander & Ferreira, 2005 | Apistogramma salpinction | 56722 |
| Heros salvini Günther, 1862 | Trichromis salvini | 114771 |
| Tilapia sanagaensis Thys van den Audenaerde, 1966 | Sarotherodon galilaeus | 4999 |
| Cichlasoma sanctifranciscense Kullander, 1983 | Cichlasoma sanctifranciscense | 36377 |
| Metriaclima sandaracinos Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia pyrsonotos | 79521 |
| Australoheros sanguineus Ottoni, 2013 | Australoheros sanguineus | 94124 |
| Crenicichla santaremensis Haseman, 1911 | Crenicichla macrophthalma | 36377 |
| Crenicichla santosi Ploeg, 1991 | Crenicichla santosi | 36377 |
| Geophagus santosi Mattos & Costa, 2018 | Geophagus santosi | 119412 |
| Acara sapayensis Regan, 1903 | Andinoacara sapayensis | 36377 |
| Australoheros saquarema Ottoni & Costa, 2008 | Australoheros saquarema | 79631 |
| Aulonocara saulosi Meyer, Riehl & Zetzsche, 1987 | Aulonocara saulosi | 4975 |
| Pseudotropheus saulosi Konings, 1990 | Chindongo saulosi | 119465 |
| Ctenochromis sauvagei Pfeffer, 1896 | Haplochromis sauvagei | 4983 |
| Tilapia savagei Fowler, 1919 | Tilapia brevimanus | 5163 |
| Lamprologus savoryi Poll, 1949 | Neolamprologus savoryi | 5667 |
| Lamprologus savoryi elongatus Trewavas & Poll, 1952 | Neolamprologus brichardi | 5667 |
| Lamprologus savoryi pulcher Trewavas & Poll, 1952 | Neolamprologus pulcher | 5667 |
| Sparus saxatilis Linnaeus, 1758 | Crenicichla saxatilis | 26372 |
| Crenicichla saxatilis albopunctata Pellegrin, 1904 | Crenicichla albopunctata | 26372 |
| Crenicichla saxatilis semicincta Steindachner, 1892 | Crenicichla semicincta | 36377 |
| Haplochromis saxicola Greenwood, 1960 | Haplochromis saxicola | 4983 |
| Platax scalaris Cuvier, 1831 | Pterophyllum scalare | 9088 |
| Zeus scalaris Schultze, 1823 | Pterophyllum scalare | 36377 |
| Ctenochromis scatebra Genner, Ngatunga & Turner, 2022 | Ctenochromis scatebra | 127080 |
| Haplochromis scheffersi Snoeks, De Vos & Thys van den Audenaerde, 1987 | Haplochromis scheffersi | 4983 |
| Cardiopharynx schoutedeni Poll, 1942 | Cardiopharynx schoutedeni | 5609 |
| Haplochromis schoutedeni (non Poll, 1932) | Haplochromis graueri | 4983 |
| Haplochromis schoutedeni Poll, 1932 | Haplochromis paucidens | 4983 |
| Haplochromis schoutedeni (non Poll, 1932) | Haplochromis adolphifrederici | 4983 |
| Pelmatochromis schoutedeni Poll & Thys van den Audenaerde, 1967 | Chromidotilapia schoutedeni | 5616 |
| Lamprologus schreyeni Poll, 1974 | Neolamprologus schreyeni | 5667 |
| Trematochromis schreyeni Poll, 1987 | Trematochromis benthicola | 57075 |
| Haplochromis schubotzi (non Boulenger, 1914) | Haplochromis angustifrons | 4983 |
| Haplochromis schubotzi (non Pappenheim & Boulenger, 1914) | Haplochromis eduardii | 4983 |
| Haplochromis schubotzi (non Pappenheim & Boulenger, 1914) | Haplochromis engystoma | 4983 |
| Haplochromis schubotzi Boulenger, 1914 | Haplochromis schubotzi | 4983 |
| Haplochromis schubotziellus Greenwood, 1973 | Haplochromis schubotziellus | 4983 |
| Hemichromis schwebischi (non Sauvage, 1884) | Chromidotilapia kingsleyae | 5616 |
| Hemichromis schwebischi Sauvage, 1884 | Oreochromis schwebischi | 2 |
| Haplochromis schwetzi Poll, 1967 | Thoracochromis schwetzi | 52307 |
| Neopharynx schwetzi Poll, 1948 | Cyclopharynx schwetzi | 5668 |
| Metriaclima sciasma Ciccotto, Konings & Stauffer, 2011 | Maylandia sciasma | 86409 |
| Cichlasoma scitulum Říčan & Kullander, 2003 | Australoheros scitulus | 51414 |
| Batrachops scottii Eigenmann, 1907 | Crenicichla scottii | 26688 |
| Geophagus scymnophilus Hensel, 1870 | Gymnogeophagus labiatus | 36377 |
| Crenicichla sedentaria Kullander, 1986 | Crenicichla sedentaria | 9088 |
| Otopharynx selenurus Regan, 1922 | Otopharynx selenurus | 4991 |
| Batrachops semifasciatus Heckel, 1840 | Crenicichla semifasciata | 36377 |
| Chaetobranchus semifasciatus Steindachner, 1875 | Chaetobranchus semifasciatus | 36377 |
| Haplochromis semipalatus Trewavas, 1935 | Mylochromis semipalatus | 267 |
| Cichlasoma septemfasciatum Regan, 1908 | Amatitlania septemfasciata | 114771 |
| Retroculus septentrionalis Gosse, 1971 | Retroculus septentrionalis | 36377 |
| Haplochromis serenus Trewavas, 1935 | Nyassachromis serenus | 267 |
| Haplochromis serranoides (non Regan, 1922) | Sciaenochromis ahli | 267 |
| Haplochromis serranoides Regan, 1922 | Haplochromis spekii | 4983 |
| Hemichromis serranus Pfeffer, 1896 | Haplochromis serranus | 4983 |
| Haplochromis serridens Regan, 1925 | Haplochromis serridens | 4983 |
| Gymnogeophagus setequedas Reis, Malabarba & Pavanelli, 1992 | Gymnogeophagus setequedas | 36377 |
| Cichlasoma severum perpunctatum Miranda Ribeiro, 1918 | Heros efasciatus | 36377 |
| Heros severus Heckel, 1840 | Heros severus | 36377 |
| Tilapia sexfasciata Pellegrin, 1900 | Coptodon rendalli | 5163 |
| Cichlosoma sexfasciatum Regan, 1905 | Vieja fenestrata | 36377 |
| Cichlasoma sexfasciatus Regan, 1905 | Vieja fenestrata | 7335 |
| Haplochromis sexfasciatus Regan, 1922 | Placidochromis johnstoni | 4994 |
| Lamprologus sexfasciatus Trewavas & Poll, 1952 | Neolamprologus sexfasciatus | 5667 |
| Tilapia shariensis Fowler, 1949 | Coptodon zillii | 5163 |
| Tilapia sheshekensis Gilchrist & Thompson, 1917 | Oreochromis macrochir | 37573 |
| Corematodus shiranus Boulenger, 1897 | Corematodus shiranus | 5617 |
| Labidochromis shiranus Lewis, 1982 | Labidochromis shiranus | 5653 |
| Oreochromis shiranus Boulenger, 1897 | Oreochromis shiranus | 5166 |
| Heros sieboldii Kner, 1863 | Talamancaheros sieboldii | 114771 |
| Lamprologus signatus (non Poll, 1952) | Lamprologus kungweensis | 5654 |
| Lamprologus signatus Poll, 1952 | Lamprologus signatus | 5654 |
| Pelvicachromis signatus Lamboj, 2004 | Wallaceochromis signatus | 110229 |
| Pelvicachromis silviae Lamboj, 2013 | Pelvicachromis silviae | 93865 |
| Xenotilapia sima (non Boulenger, 1899) | Xenotilapia boulengeri | 5717 |
| Xenotilapia sima Boulenger, 1899 | Xenotilapia sima | 50515 |
| Haplochromis simba Vranken, Van Steenberge, Heylen, Decru & Snoeks, 2022 | Haplochromis simba | 126312 |
| Apistogramma similis Staeck, 2003 | Apistogramma similis | 55839 |
| Haplochromis similis (non Regan, 1922) | Protomelas marginatus | 267 |
| Haplochromis similis Regan, 1922 | Protomelas similis | 267 |
| Neolamprologus similis Büscher, 1992 | Neolamprologus similis | 50569 |
| Labeotropheus simoneae Pauers, 2016 | Labeotropheus simoneae | 111073 |
| Crenicichla simoni Haseman, 1911 | Crenicichla semifasciata | 36377 |
| Chromis simonis Günther, 1864 | Tristramella simonis | 5712 |
| Tristramella simonis intermedia Steinitz & Ben-Tuvia, 1959 | Tristramella simonis | 5712 |
| Tilapia simotes (non Boulenger, 1911) | Haplochromis nigricans | 4983 |
| Tilapia simotes Boulenger, 1911 | Haplochromis simotes | 27668 |
| Neochromis simotes nyassae Borodin, 1936 | Astatotilapia calliptera | 4983 |
| Haplochromis simpsoni Greenwood, 1965 | Haplochromis simpsoni | 4983 |
| Haplochromis simulans Regan, 1922 | Nimbochromis venustus | 267 |
| Melanochromis simulans Eccles, 1973 | Melanochromis simulans | 5663 |
| Stappersia singularis Boulenger, 1914 | Xenotilapia ochrogenys | 5717 |
| Crenicichla sipaliwini Ploeg, 1987 | Crenicichla sipaliwini | 36377 |
| Amatitlania siquia Schmitter-Soto, 2007 | Amatitlania siquia | 74403 |
| Chromis smithii Castelnau, 1861 | Haplochromis smithii | 86697 |
| Haplochromis snoeksi Wamuini Lunkayilakio & Vreven, 2010 | Haplochromis snoeksi | 85558 |
| Tilapia snyderae Stiassny, Schliewen & Dominey, 1992 | Coptodon snyderae | 93285 |
| Cichlasoma socolofi Miller & Taylor, 1984 | Thorichthys socolofi | 36377 |
| Pseudotropheus socolofi Johnson, 1974 | Chindongo socolofi | 119465 |
| Apistogramma sororcula Staeck & Schindler, 2016 | Apistogramma sororcula | 129299 |
| Tilapia sparrmani multiradiata Holly, 1928 | Coptodon zillii | 5163 |
| Tilapia sparrmanii Smith, 1840 | Tilapia sparrmanii | 93285 |
| Tilapia sparrmanii (non Smith, 1840) | Coptodon zillii | 5163 |
| Tilapia sparrmanni (non Smith, 1840) | Tilapia guinasana | 5163 |
| Tilapia sparsidens Hilgendorf, 1905 | Astatotilapia bloyeti | 4983 |
| Acharnes speciosus Müller & Troschel, 1849 | Cichla ocellaris | 26372 |
| Haplochromis speciosus Trewavas, 1935 | Otopharynx speciosus | 267 |
| Lamprologus speciosus Büscher, 1991 | Lamprologus speciosus | 12251 |
| Acara spectabilis Steindachner, 1875 | Caquetaia spectabilis | 36377 |
| Haplochromis spectabilis Trewavas, 1935 | Buccochromis spectabilis | 267 |
| Serranochromis spei Trewavas, 1964 | Serranochromis spei | 5693 |
| Pelmatochromis spekii (non Boulenger, 1906) | Haplochromis orthostoma | 4983 |
| Pelmatochromis spekii (non Boulenger, 1906) | Haplochromis altigenis | 4983 |
| Pelmatochromis spekii (non Boulenger, 1906) | Haplochromis victorianus | 4983 |
| Pelmatochromis spekii (non Boulenger, 1906) | Haplochromis schubotzi | 4983 |
| Pelmatochromis spekii Boulenger, 1906 | Haplochromis spekii | 4983 |
| Pelmatochromis spekii (non Boulenger, 1906) | Haplochromis nyanzae | 4983 |
| Pelmatochromis spekii (non Boulenger, 1906) | Haplochromis prognathus | 4983 |
| Otopharynx spelaeotes Cleaver, Konings & Stauffer, 2009 | Otopharynx spelaeotes | 82798 |
| Haplochromis sphaerodon Regan, 1922 | Mylochromis sphaerodon | 267 |
| Guianacara sphenozona Kullander & Nijssen, 1989 | Guianacara sphenozona | 26372 |
| Haplochromis sphex ter Huurne & Witte, 2010 | Haplochromis sphex | 85523 |
| Haplochromis spilonotus Trewavas, 1935 | Protomelas spilonotus | 267 |
| Haplochromis spilopterus Trewavas, 1935 | Protomelas spilopterus | 267 |
| Xenotilapia spilopterus Poll & Stewart, 1975 | Xenotilapia spilopterus | 2059 |
| Haplochromis spilorhynchus Regan, 1922 | Champsochromis spilorhynchus | 267 |
| Haplochromis spilostichus Trewavas, 1935 | Mylochromis spilostichus | 267 |
| Cichlasoma spilotum Meek, 1912 | Hypsophrys nicaraguensis | 36377 |
| Chromis spilurus Günther, 1894 | Oreochromis spilurus | 5166 |
| Heros spilurus Günther, 1862 | Cryptoheros spilurus | 1672 |
| Cichlasoma spinosissimum immaculata Pellegrin, 1904 | Cryptoheros spilurus | 74403 |
| Heros spinosissimus Vaillant & Pellegrin, 1902 | Rocio spinosissima | 36377 |
| Lamprologus splendens Brichard, 1989 | Neolamprologus splendens | 5667 |
| Nanochromis splendens Roberts & Stewart, 1976 | Nanochromis splendens | 5666 |
| Petenia splendida Günther, 1862 | Petenia splendida | 36377 |
| Tilapia spongotroktis Stiassny, Schliewen & Dominey, 1992 | Coptodon spongotroktis | 93285 |
| Iodotropheus sprengerae Oliver & Loiselle, 1972 | Iodotropheus sprengerae | 5649 |
| Heros spurius Heckel, 1840 | Heros spurius | 36377 |
| Pseudoplesiops squamiceps Boulenger, 1902 | Congochromis squamiceps | 5666 |
| Chromis squamipinnis Günther, 1864 | Oreochromis squamipinnis | 2 |
| Haplochromis squamipinnis Regan, 1921 | Haplochromis squamipinnis | 4983 |
| Haplochromis squamulatus Regan, 1922 | Haplochromis squamulatus | 4983 |
| Apistogramma staecki Koslowski, 1985 | Apistogramma staecki | 36377 |
| Andinoacara stalsbergi Musilová, Schindler & Staeck, 2009 | Andinoacara stalsbergi | 82770 |
| Limnochromis staneri Poll, 1949 | Greenwoodochromis staneri | 5659 |
| Lamprologus stappersi Pellegrin, 1927 | Lamprologus stappersi | 5654 |
| Serranochromis stappersi Trewavas, 1964 | Serranochromis stappersi | 5693 |
| Haplochromis stappersii Poll, 1943 | Astatotilapia stappersii | 79015 |
| Ophthalmotilapia stappersii Poll, 1943 | Lestradea stappersii | 5655 |
| Pelmatochromis stappersii (non Boulenger, 1914) | Ectodus descampsii | 5631 |
| Pelmatochromis stappersii Boulenger, 1914 | Callochromis pleurospilus | 35977 |
| Tilapia steinbachi Trewavas, 1962 | Sarotherodon steinbachi | 2 |
| Cichlasoma steindachneri Jordan & Snyder, 1899 | Herichthys steindachneri | 36377 |
| Geophagus steindachneri Eigenmann & Hildebrand, 1922 | Geophagus steindachneri | 36377 |
| Haplochromis steindachneri Lohberger, 1929 | Haplochromis prognathus | 4983 |
| Heterogramma steindachneri Regan, 1908 | Apistogramma steindachneri | 26372 |
| Lamprologus steindachneri Boulenger, 1915 | Lamprologus callipterus | 5654 |
| Hemichromis stellifer (non Loiselle, 1979) | Rubricatochromis bimaculatus | 5644 |
| Hemichromis stellifer Loiselle, 1979 | Rubricatochromis stellifer | 128620 |
| Paratilapia stenosoma Boulenger, 1901 | Hemibates stenosoma | 5643 |
| Guianacara stergiosi López-Fernández, Taphorn Baechle & Kullander, 2006 | Guianacara stergiosi | 57436 |
| Aulonocara steveni Meyer, Riehl & Zetzsche, 1987 | Aulonocara steveni | 4975 |
| Trematocara stigmaticum Poll, 1943 | Trematocara stigmaticum | 5708 |
| Tilapia stigmatogenys Boulenger, 1913 | Thoracochromis stigmatogenys | 4983 |
| Tilapia stigmatogenys (non Boulenger, 1913) | Haplochromis oligacanthus | 4983 |
| Crenicichla stocki Ploeg, 1991 | Crenicichla stocki | 34223 |
| Aequidens stollei Miranda Ribeiro, 1918 | Aequidens tetramerus | 36377 |
| Haplochromis stonemani Burgess & Axelrod, 1973 | Aulonocara stonemani | 267 |
| Tilapia stormsi Boulenger, 1902 | Orthochromis stormsi | 26626 |
| Haplochromis straeleni Poll, 1944 | Astatoreochromis straeleni | 5602 |
| Plecodus straeleni Poll, 1948 | Plecodus straeleni | 5681 |
| Lethrinops stridei Eccles & Lewis, 1977 | Lethrinops stridei | 4985 |
| Lethrinops stridei (non Eccles & Lewis, 1977) | Lethrinops microdon | 4985 |
| Haplochromis strigatus Regan, 1922 | Dimidiochromis strigatus | 267 |
| Labidochromis strigatus Lewis, 1982 | Labidochromis strigatus | 5653 |
| Ctenochromis strigigena Pfeffer, 1893 | Astatotilapia bloyeti | 4983 |
| Aulonocara stuartgranti Meyer & Riehl, 1985 | Aulonocara stuartgranti | 4975 |
| Iodotropheus stuartgranti Konings, 1990 | Iodotropheus stuartgranti | 5649 |
| Otopharynx styrax Oliver, 2018 | Otopharynx styrax | 119408 |
| Hemichromis subocellatus Günther, 1872 | Pelvicachromis subocellatus | 5677 |
| Acara subocularis Cope, 1878 | Acarichthys heckelii | 2037 |
| Chromis subocularis (non Günther, 1894) | Astatotilapia calliptera | 4983 |
| Chromis subocularis Günther, 1894 | Placidochromis subocularis | 267 |
| Haplochromis sulphureus Greenwood & Barel, 1978 | Haplochromis sulphureus | 4983 |
| Amphilophus supercilius Geiger, McCrary & Stauffer, 2010 | Amphilophus supercilius | 85056 |
| Aequidens superomaculatum Hernández-Acevedo, Machado-Allison & Lasso, 2015 | Aequidens superomaculatum | 121640 |
| Chaetodon suratensis Bloch, 1790 | Etroplus suratensis | 6028 |
| Sparus surinamensis Bloch, 1791 | Geophagus surinamensis | 26372 |
| Crenicichla sveni Ploeg, 1991 | Crenicichla sveni | 36377 |
| Geophagus sveni Lucinda, Lucena & Assis, 2010 | Geophagus sveni | 84008 |
| Serranochromis swartzi Stauffer, Bills & Skelton, 2021 | Serranochromis swartzi | 123822 |
| Apistogramma sweglesi Meinken, 1961 | Apistogramma bitaeniata | 36377 |
| Tilapia swierstrae Gilchrist & Thompson, 1917 | Coptodon rendalli | 5163 |
| Tilapia swynnertoni Boulenger, 1907 | Astatotilapia swynnertoni | 4983 |
| Tilapia sykesii Gilchrist & Thompson, 1917 | Coptodon rendalli | 88 |
| Lamprologus symoensi Poll, 1976 | Lamprologus symoensi | 5654 |
| Cichlasoma synspilum Hubbs, 1935 | Vieja melanurus | 86887 |
| Acara syspilus Cope, 1872 | Bujurquina syspilus | 9088 |
| Chromis taenia Bennett, 1831 | Cichlasoma taenia | 36377 |
| Nannacara taenia Regan, 1912 | Nannacara taenia | 36377 |
| Nannacara taenia (non Regan, 1912) | Nannacara anomala | 36377 |
| Heterogramma taeniatum pertense Haseman, 1911 | Apistogramma pertensis | 36377 |
| Corematodus taeniatus Trewavas, 1935 | Corematodus taeniatus | 5617 |
| Haplochromis taeniatus Regan, 1922 | Haplochromis prognathus | 4983 |
| Mesops taeniatus Günther, 1862 | Apistogramma taeniata | 36377 |
| Pelmatochromis taeniatus (non Boulenger, 1901) | Heterochromis multidens | 52307 |
| Pelmatochromis taeniatus Boulenger, 1901 | Pelvicachromis taeniatus | 5677 |
| Haplochromis taeniolatus Trewavas, 1935 | Protomelas taeniolatus | 267 |
| Geophagus taeniopareius Kullander & Royero, 1992 | Geophagus taeniopareius | 36377 |
| Lamprologus taeniurus Boulenger, 1914 | Neolamprologus brevis | 5667 |
| Crenicichla taikyra Casciotta, Almirón, Aichino, Gómez, Piálek & Říčan, 2013 | Crenicichla taikyra | 94256 |
| Herichthys tamasopoensis Artigas Azas, 1993 | Herichthys tamasopoensis | 36377 |
| Bujurquina tambopatae Kullander, 1986 | Bujurquina tambopatae | 9088 |
| Haplochromis tanaos van Oijen & Witte, 1996 | Haplochromis tanaos | 47153 |
| Chromis tanganicae Günther, 1894 | Oreochromis tanganicae | 2 |
| Pelmatochromis tanganyicae Borodin, 1931 | Serranochromis robustus | 5693 |
| Crenicichla tapii Piálek, Dragová, Casciotta, Almirón & Říčan, 2015 | Crenicichla tapii | 104794 |
| Metriaclima tarakiki Stauffer, Black & Konings, 2013 | Maylandia tarakiki | 93436 |
| Gymnogeophagus taroba Casciotta, Almirón, Piálek & Říčan, 2017 | Gymnogeophagus taroba | 123557 |
| Australoheros taura Ottoni & Cheffe, 2009 | Australoheros taura | 81913 |
| Haplochromis taurinus Trewavas, 1933 | Haplochromis taurinus | 127594 |
| Australoheros tavaresi Ottoni, 2012 | Australoheros tavaresi | 89866 |
| Astatotilapia tchadensis Trape, 2016 | Astatotilapia tchadensis | 112399 |
| Cichlasoma teapae Evermann & Goldsborough, 1902 | Paraneetroplus gibbiceps | 7335 |
| Haplochromis teegelaari Greenwood & Barel, 1978 | Haplochromis teegelaari | 4983 |
| Cichlasoma tembe Casciotta, Gómez & Toresanni, 1995 | Australoheros tembe | 26722 |
| Cichla temensis Humboldt, 1821 | Cichla temensis | 57716 |
| Heros temporalis Günther, 1862 | Hypselecara temporalis | 9088 |
| Telmatochromis temporalis Boulenger, 1898 | Telmatochromis temporalis | 5704 |
| Telmatochromis temporalis (non Boulenger, 1898) | Telmatochromis dhonti | 5704 |
| Crenicichla tendybaguassu Lucena & Kullander, 1992 | Crenicichla tendybaguassu | 26688 |
| Cichlasoma tenue Meek, 1906 | Trichromis salvini | 7335 |
| Xenotilapia tenuidentata Poll, 1951 | Xenotilapia tenuidentata | 50515 |
| Haplochromis tenuis Borodin, 1931 | Haplochromis longirostris | 4983 |
| Herichthys tepehua De la Maza-Benignos, Ornelas-García, Lozano-Vilano, García-Ramírez & Doadrio, 2014 | Herichthys tepehua | 99935 |
| Heros teporatus Fowler, 1903 | Herichthys teporatus | 36377 |
| Crenicichla ternetzi Norman, 1926 | Crenicichla ternetzi | 36377 |
| Theraps terrabae Jordan & Evermann, 1927 | Talamancaheros underwoodi | 114771 |
| Gymnogeophagus terrapurpura Loureiro, Zarucki, Malabarba & González-Bergonzoni, 2016 | Gymnogeophagus terrapurpura | 123556 |
| Hemichromis tersquamatus Günther, 1899 | Chromidotilapia guntheri | 5616 |
| Crenicichla tesay Casciotta & Almirón, 2009 | Crenicichla tesay | 81121 |
| Centrarchus tetracanthus Valenciennes, 1831 | Nandopsis tetracanthus | 36377 |
| Lamprologus tetracanthus Boulenger, 1899 | Neolamprologus tetracanthus | 5667 |
| Heros tetracanthus cinctus Eigenmann, 1903 | Nandopsis tetracanthus | 36377 |
| Heros tetracanthus griseus Eigenmann, 1903 | Nandopsis tetracanthus | 36377 |
| Heros tetracanthus latus Eigenmann, 1903 | Nandopsis tetracanthus | 36377 |
| Heros tetracanthus torralbasi Eigenmann, 1903 | Nandopsis tetracanthus | 36377 |
| Acara tetramerus Heckel, 1840 | Aequidens tetramerus | 26372 |
| Haplochromis tetraspilus Trewavas, 1935 | Otopharynx tetraspilus | 267 |
| Chromis tetrastigma Günther, 1894 | Otopharynx tetrastigma | 267 |
| Lamprologus teugelsi Schelly & Stiassny, 2004 | Lamprologus teugelsi | 52248 |
| Nanochromis teugelsi Lamboj & Schelly, 2006 | Nanochromis teugelsi | 57723 |
| Haplochromis teunisrasi Witte & Witte-Maas, 1981 | Haplochromis teunisrasi | 4983 |
| Labidochromis textilis (non Oliver, 1975) | Labidochromis maculicauda | 5653 |
| Labidochromis textilis (non Oliver, 1975) | Labidochromis joanjohnsonae | 5663 |
| Labidochromis textilis Oliver, 1975 | Labidochromis textilis | 5653 |
| Labidochromis textilis (non Oliver, 1975) | Labidochromis strigatus | 5653 |
| Labidochromis textilis (non Oliver, 1975) | Labidochromis flavigulis | 5653 |
| Metriaclima thapsinogen Stauffer, Bowers, Kellogg & McKaye, 1997 | Maylandia pyrsonotos | 79521 |
| Acara thayeri Steindachner, 1875 | Laetacara thayeri | 9088 |
| Geophagus thayeri Steindachner, 1875 | Acarichthys heckelii | 2037 |
| Haplochromis theliodon Greenwood, 1960 | Haplochromis theliodon | 4983 |
| Haplochromis thereuterion van Oijen & Witte, 1996 | Haplochromis thereuterion | 47153 |
| Copadichromis thinos Stauffer, LoVullo & McKaye, 1993 | Mchenga thinos | 57549 |
| Chromis tholloni Sauvage, 1884 | Coptodon tholloni | 5163 |
| Tilapia tholloni congica Poll & Thys van den Audenaerde, 1960 | Coptodon congica | 5163 |
| Paratilapia thomasi Boulenger, 1915 | Anomalochromis thomasi | 5599 |
| Haplochromis thuragnathus Greenwood, 1967 | Haplochromis thuragnathus | 4983 |
| Cichla thyrorus Kullander & Ferreira, 2006 | Cichla thyrorus | 57716 |
| Haplochromis thysi Poll, 1967 | Sargochromis thysi | 5693 |
| Tilapia thysi Stiassny, Schliewen & Dominey, 1992 | Coptodon thysi | 93285 |
| Chromis tiberiadis Lortet, 1883 | Sarotherodon galilaeus | 2 |
| Crenicichla tigrina Ploeg, Jégu & Ferreira, 1991 | Crenicichla tigrina | 36377 |
| Lamprologus tigripictilis (non Schelly & Stiassny, 2004) | Lamprologus markerti | 97099 |
| Lamprologus tigripictilis Schelly & Stiassny, 2004 | Lamprologus tigripictilis | 52248 |
| Neolamprologus timidus Kullander, Norén, Karlsson & Karlsson, 2014 | Neolamprologus timidus | 95525 |
| Gobiochromis tinanti Poll, 1939 | Steatocranus tinanti | 5696 |
| Crenicichla tingui Kullander & Lucena, 2006 | Crenicichla tingui | 57632 |
| Gymnogeophagus tiraparae González-Bergonzoni, Loureiro & Oviedo, 2009 | Gymnogeophagus tiraparae | 80696 |
| Lamprologus toae Poll, 1949 | Neolamprologus toae | 5667 |
| Paratilapia toddi Boulenger, 1905 | Paratilapia toddi | 4947 |
| Pallidochromis tokolosh Turner, 1994 | Pallidochromis tokolosh | 26712 |
| Amphilophus tolteca Recknagel, Kusche, Elmer & Meyer, 2013 | Amphilophus tolteca | 94402 |
| Haplochromis torrenticola Thys van den Audenaerde, 1963 | Orthochromis torrenticola | 4983 |
| Cycla toucounarai Castelnau, 1855 | Cichla monoculus | 9088 |
| Tilapia tournieri Daget, 1965 | Sarotherodon tournieri | 4999 |
| Julidochromis transcriptus Matthes, 1959 | Julidochromis transcriptus | 5651 |
| Nanochromis transvestitus Stewart & Roberts, 1984 | Nanochromis transvestitus | 33454 |
| Tilapia trematocephala Boulenger, 1901 | Aulonocara trematocephalum | 267 |
| Lamprologus tretocephalus Boulenger, 1899 | Neolamprologus tretocephalus | 5667 |
| Copadichromis trewavasae Konings, 1999 | Copadichromis trewavasae | 47113 |
| Labeotropheus trewavasae Fryer, 1956 | Labeotropheus trewavasae | 5652 |
| Petrochromis trewavasae Poll, 1948 | Petrochromis trewavasae | 52921 |
| Placidochromis trewavasae Hanssens, 2004 | Placidochromis trewavasae | 55898 |
| Tilapia trewavasae Poll, 1939 | Oreochromis leucostictus | 5166 |
| Tylochromis trewavasae Stiassny, 1989 | Tylochromis trewavasae | 5714 |
| Petrochromis trewavasae ephippium Brichard, 1989 | Petrochromis ephippium | 52921 |
| Haplochromis triaenodon Trewavas, 1935 | Protomelas triaenodon | 267 |
| Heros triagramma Steindachner, 1864 | Trichromis salvini | 7335 |
| Haplotaxodon tricoti (non Poll, 1948) | Benthochromis melanoides | 5606 |
| Haplotaxodon tricoti Poll, 1948 | Benthochromis tricoti | 5606 |
| Haplochromis tridens Regan & Trewavas, 1928 | Haplochromis tridens | 4983 |
| Haplochromis tridens (non Regan & Trewavas, 1928) | Haplochromis dolichorhynchus | 4983 |
| Petrotilapia tridentiger (non Trewavas, 1935) | Iodotropheus sprengerae | 5649 |
| Petrotilapia tridentiger Trewavas, 1935 | Petrotilapia tridentiger | 5597 |
| Cychla trifasciata Jardine & Schomburgk, 1843 | Cichla temensis | 36377 |
| Apistogramma trifasciatum haraldschultzi Meinken, 1960 | Apistogramma trifasciata | 36377 |
| Heterogramma trifasciatum maciliense Hasemen, 1911 | Apistogramma trifasciata | 36377 |
| Heterogramma trifasciatum maciliense Haseman, 1911 | Apistogramma trifasciata | 36377 |
| Biotodoma trifasciatus Eigenmann & Kennedy, 1903 | Apistogramma trifasciata | 36377 |
| Haplotaxodon trifasciatus Takahashi & Nakaya, 1999 | Haplotaxodon trifasciatus | 31052 |
| Lethrinops trilineata Trewavas, 1931 | Tramitichromis trilineatus | 267 |
| Acaronia trimaculata Allen, 1942 | Aequidens tetramerus | 26372 |
| Haplochromis trimaculatus Iles, 1960 | Copadichromis trimaculatus | 267 |
| Heros trimaculatus Günther, 1867 | Amphilophus trimaculatus | 36377 |
| Sparus trimaculatus Shaw, 1809 | Geophagus surinamensis | 36377 |
| Haligenes tristrami Günther, 1860 | Coptodon zillii | 5163 |
| Pseudotropheus tropheops (non Regan, 1922) | Tropheops microstoma | 5684 |
| Pseudotropheus tropheops (non Regan, 1922) | Tropheops macrophthalmus | 5684 |
| Pseudotropheus tropheops (non Regan, 1922) | Tropheops gracilior | 5684 |
| Pseudotropheus tropheops Regan, 1922 | Tropheops tropheops | 79521 |
| Pseudotropheus tropheops (non Regan, 1922) | Tropheops romandi | 5684 |
| Pseudotropheus tropheops gracilior Trewavas, 1935 | Tropheops gracilior | 79521 |
| Pseudotropheus tropheops romandi Colombé, 1979 | Tropheops romandi | 79521 |
| Heros troschelii Steindachner, 1867 | Mayaheros troschelii | 36377 |
| Paretroplus tsimoly Stiassny, Chakrabarty & Loiselle, 2001 | Paretroplus tsimoly | 40691 |
| Cichlasoma tuba Meek, 1912 | Tomocichla tuba | 114771 |
| Geophagus tuberosus Gosse, 1976 | Geophagus brasiliensis | 26282 |
| Aequidens tubicen Kullander & Ferreira, 1991 | Aequidens tubicen | 36377 |
| Crenicichla tuca Piálek, Dragová, Casciotta, Almirón & Říčan, 2015 | Crenicichla tuca | 104794 |
| Cichla tucunare Heckel, 1840 | Cichla temensis | 36377 |
| Apistogramma tucurui Staeck, 2003 | Apistogramma tucurui | 55839 |
| Lamprologus tumbanus Boulenger, 1899 | Lamprologus tumbanus | 5654 |
| Haplochromis turkanae Greenwood, 1974 | Haplochromis turkanae | 4983 |
| Lethrinops turneri Ngatunga & Snoeks, 2003 | Lethrinops turneri | 49505 |
| Placidochromis turneri Hanssens, 2004 | Placidochromis turneri | 55898 |
| Pseudotropheus tursiops Burgess & Axelrod, 1975 | Pseudotropheus tursiops | 5684 |
| Cichlasoma tuyrense Meek & Hildebrand, 1913 | Isthmoheros tuyrensis | 114771 |
| Astatotilapia tweddlei Jackson, 1985 | Astatotilapia tweddlei | 4967 |
| Paracara typus Bleeker, 1878 | Paratilapia polleni | 5674 |
| Haplochromis tyrianthinus Greenwood & Gee, 1969 | Haplochromis tyrianthinus | 4983 |
| Apistogramma uaupesi Kullander, 1980 | Apistogramma uaupesi | 36377 |
| Steatocranus ubanguiensis Roberts & Stewart, 1976 | Steatocranus ubanguiensis | 5696 |
| Chromys ucayalensis Castelnau, 1855 | Chaetobranchus flavescens | 36377 |
| Benitochromis ufermanni Lamboj, 2001 | Benitochromis ufermanni | 39874 |
| Vieja ufermanni Allgayer, 2002 | Kihnichthys ufermanni | 104176 |
| Cichlasoma umbriferum Meek & Hildebrand, 1913 | Kronoheros umbrifer | 114771 |
| Herichthys underwoodi Regan, 1906 | Talamancaheros underwoodi | 114771 |
| Tomocichla underwoodi Regan, 1908 | Tomocichla tuba | 114771 |
| Acara unicolor Heckel, 1840 | Acaronia nassa | 9088 |
| Chromys unimaculata Castelnau, 1855 | Geophagus brasiliensis | 36377 |
| Trematocara unimaculatum Boulenger, 1901 | Trematocara unimaculatum | 5708 |
| Hypsophrys unimaculatus Agassiz, 1859 | Hypsophrys nicaraguensis | 36377 |
| Chromys uniocellata Castelnau, 1855 | Aequidens tetramerus | 26372 |
| Chromys unipunctata Castelnau, 1855 | Geophagus obscurus | 36377 |
| Cichla unitaeniatus Magalhaes, 1931 | Cichla temensis | 36377 |
| Tilapia urolepis Norman, 1922 | Oreochromis urolepis | 5166 |
| Heros urophthalmus Günther, 1862 | Mayaheros urophthalmus | 114771 |
| Cichlasoma urophthalmus aguadae Hubbs, 1936 | Mayaheros aguadae | 36377 |
| Cichlasoma urophthalmus alborum Hubbs, 1936 | Mayaheros alborus | 36377 |
| Cichlasoma urophthalmus amarum Hubbs, 1936 | Mayaheros amarus | 36377 |
| Cichlasoma urophthalmus cienagae Hubbs, 1936 | Mayaheros cienagae | 36377 |
| Cichlasoma urophthalmus conchitae Hubbs, 1936 | Mayaheros conchitae | 36377 |
| Cichlasoma urophthalmus ericymba Hubbs, 1938 | Mayaheros ericymba | 36377 |
| Cichlasoma urophthalmus mayorum Hubbs, 1936 | Mayaheros mayorum | 36377 |
| Cichlasoma urophthalmus stenozonum Hubbs, 1936 | Mayaheros stenozonus | 36377 |
| Cichlasoma urophthalmus trispilum Hubbs, 1935 | Mayaheros trispilus | 36377 |
| Cichlasoma urophthalmus zebra Hubbs, 1936 | Mayaheros zebra | 36377 |
| Crenicichla urosema Kullander, 1990 | Crenicichla urosema | 26749 |
| Haplochromis urotaenia Regan, 1922 | Hemitaeniochromis urotaenia | 267 |
| Apistogramma urteagai Kullander, 1986 | Apistogramma urteagai | 9088 |
| Haplochromis ushindi Van Oijen, 2004 | Haplochromis ushindi | 55928 |
| Metriaclima usisyae Li, Konings & Stauffer, 2016 | Maylandia usisyae | 119465 |
| Orthochromis uvinzae De Vos & Seegers, 1998 | Orthochromis uvinzae | 28906 |
| Crenicichla vaillanti Pellegrin, 1903 | Crenicichla vaillanti | 36377 |
| Paretroplus vandami Sauvage, 1891 | Paretroplus damii | 26282 |
| Haplochromis vanderhorsti Greenwood, 1954 | Astatoreochromis straeleni | 126033 |
| Haplochromis vanheusdeni Schedel, Friel & Schliewen, 2014 | Haplochromis vanheusdeni | 97348 |
| Haplochromis vanoijeni de Zeeuw & Witte, 2010 | Haplochromis vanoijeni | 85523 |
| Trematocara variabile Poll, 1952 | Trematocara variabile | 5708 |
| Lethrinops variabilis Trewavas, 1931 | Tramitichromis variabilis | 267 |
| Tilapia variabilis (non Boulenger, 1906) | Oreochromis esculentus | 5166 |
| Tilapia variabilis Boulenger, 1906 | Oreochromis variabilis | 5166 |
| Tylochromis variabilis Stiassny, 1989 | Tylochromis variabilis | 52346 |
| Neolamprologus variostigma Büscher, 1995 | Lepidiolamprologus variostigma | 109186 |
| Cichla vazzoleri Kullander & Ferreira, 2006 | Cichla vazzoleri | 57716 |
| Haplochromis velifer (non Trewavas, 1933) | Haplochromis simpsoni | 4983 |
| Haplochromis velifer Trewavas, 1933 | Haplochromis velifer | 4983 |
| Apistogramma velifera Staeck, 2003 | Apistogramma velifera | 55839 |
| Labidochromis vellicans (non Trewavas, 1935) | Labidochromis maculicauda | 5653 |
| Labidochromis vellicans Trewavas, 1935 | Labidochromis vellicans | 5653 |
| Haplochromis venator Greenwood, 1965 | Haplochromis venator | 4983 |
| Neolamprologus ventralis Büscher, 1995 | Neolamprologus ventralis | 50569 |
| Paratilapia ventralis Nichols, 1928 | Pseudocrenilabrus nicholsi | 5682 |
| Paratilapia ventralis Boulenger, 1898 | Ophthalmotilapia ventralis | 5669 |
| Ophthalmochromis ventralis heterodontus Poll & Matthes, 1962 | Ophthalmotilapia heterodonta | 5669 |
| Haplochromis venustus Boulenger, 1908 | Nimbochromis venustus | 267 |
| Copadichromis verduyni Konings, 1990 | Copadichromis verduyni | 4979 |
| Melanochromis vermivorus Trewavas, 1935 | Melanochromis vermivorus | 5663 |
| Haplochromis versluysi Lohberger, 1929 | Haplochromis prognathus | 4983 |
| Haplochromis vicarius (non Trewavas, 1933) | Haplochromis macropsoides | 4983 |
| Haplochromis vicarius (non Trewavas, 1933) | Haplochromis angustifrons | 4983 |
| Haplochromis vicarius Trewavas, 1933 | Haplochromis vicarius | 4983 |
| Paralabidochromis victoriae Greenwood, 1956 | Haplochromis victoriae | 12750 |
| Paratilapia victoriana (non Pellegrin, 1904) | Haplochromis nubilus | 4983 |
| Paratilapia victoriana Pellegrin, 1904 | Haplochromis victorianus | 4983 |
| Paratilapia victoriana (non Pellegrin, 1904) | Haplochromis guiarti | 4983 |
| Paratilapia victoriana (non Pellegrin, 1904) | Haplochromis ishmaeli | 4983 |
| Apistogramma viejita Kullander, 1979 | Apistogramma viejita | 36377 |
| Crenicichla virgatula Ploeg, 1991 | Crenicichla virgatula | 36377 |
| Haplochromis virgatus Trewavas, 1935 | Protomelas virgatus | 267 |
| Haplochromis virginalis Iles, 1960 | Copadichromis virginalis | 267 |
| Haplochromis virginalis (non Iles, 1960) | Copadichromis ilesi | 47113 |
| Acara viridis Heckel, 1840 | Aequidens viridis | 36377 |
| Amphilophus viridis Rechnagel, Kusche, Elmer & Meyer, 2013 | Amphilophus viridis | 94402 |
| Crenicichla vittata Heckel, 1840 | Crenicichla vittata | 26688 |
| Paratilapia vittata Boulenger, 1901 | Haplochromis vittatus | 4983 |
| Paratilapia vittata nigroides Pellegrin, 1935 | Haplochromis vittatus | 4983 |
| Acara vittatus Heckel, 1840 | Bujurquina vittata | 36377 |
| Bathybates vittatus Boulenger, 1914 | Bathybates vittatus | 5605 |
| Centrarchus vittatus Jardine, 1843 | Aequidens pallidus | 36377 |
| Telmatochromis vittatus Boulenger, 1898 | Telmatochromis vittatus | 5704 |
| Paratilapia vollmeringi Steindachner, 1914 | Haplochromis gigliolii | 4983 |
| Hemichromis voltae Steindachner, 1887 | Chromidotilapia guntheri | 5616 |
| Cichlasoma vombergi Ladiges, 1938 | Nandopsis haitiensis | 79681 |
| Ptychochromoides vondrozo Sparks & Reinthal, 2001 | Ptychochromoides vondrozo | 39915 |
| Haplochromis vonlinnei van Oijen & de Zeeuw, 2008 | Haplochromis vonlinnei | 74923 |
| Chromis vorax Pfeffer, 1893 | Oreochromis mossambicus | 2 |
| Tilapia vulcani Trewavas, 1933 | Oreochromis niloticus | 5166 |
| Placidochromis vulgaris Hanssens, 2004 | Placidochromis vulgaris | 55898 |
| Acaronia vultuosa Kullander, 1989 | Acaronia vultuosa | 36377 |
| Teleocichla wajapi Varella & Moreira, 2013 | Teleocichla wajapi | 93336 |
| Crenicichla wallacii Regan, 1905 | Crenicichla wallacii | 36377 |
| Neolamprologus walteri Verburg & Bills, 2007 | Neolamprologus walteri | 74422 |
| Otopharynx walteri Konings, 1990 | Otopharynx lithobates | 82798 |
| Tilapia walteri Thys van den Audenaerde, 1968 | Coptodon walteri | 93285 |
| Apistogramma wapisana Römer, Hahn & Conrad, 2006 | Apistogramma wapisana | 57916 |
| Dicrossus warzeli Römer, Hahn & Vergara, 2010 | Dicrossus warzeli | 85095 |
| Lamprologus wauthioni Poll, 1949 | Neolamprologus wauthioni | 5667 |
| Geophagus wavrini Gosse, 1963 | Biotodoma wavrini | 36377 |
| Apistogramma weisei Ahl, 1936 | Taeniacara candidi | 36377 |
| Haplochromis welcommei Greenwood, 1966 | Haplochromis welcommei | 4983 |
| Pelmatochromis welwitschi Boulenger, 1898 | Chetia welwitschi | 5613 |
| Lamprologus werneri Poll, 1959 | Lamprologus werneri | 5654 |
| Theraps wesseli Miller, 1996 | Chortiheros wesseli | 114771 |
| Apistogramma wickleri Meinken, 1960 | Apistogramma steindachneri | 26372 |
| Nanochromis wickleri Schliewen & Stiassny, 2006 | Nanochromis wickleri | 57505 |
| Chromis williamsi Günther, 1894 | Pseudotropheus williamsi | 5684 |
| Geophagus winemilleri López-Fernández & Taphorn, 2004 | Geophagus winemilleri | 52005 |
| Paratilapia wingatii Boulenger, 1902 | Thoracochromis wingatii | 4983 |
| Haplochromis wittei (non Poll, 1939) | Haplochromis occultidens | 4983 |
| Haplochromis wittei (non Poll, 1939) | Haplochromis adolphifrederici | 4983 |
| Haplochromis wittei (non Poll, 1939) | Haplochromis graueri | 4983 |
| Haplochromis wittei Poll, 1939 | Haplochromis paucidens | 4983 |
| Melanochromis wochepa Konings-Dudin, Konings & Stauffer, 2009 | Melanochromis wochepa | 80784 |
| Apistogramma wolli Römer, Soares, Dávila, Duponchelle, Renno & Hahn, 2015 | Apistogramma wolli | 104987 |
| Gobiocichla wonderi Kanazawa, 1951 | Gobiocichla wonderi | 93285 |
| Haplochromis woodi Regan, 1922 | Stigmatochromis woodi | 267 |
| Rhamphochromis woodi Regan, 1922 | Rhamphochromis woodi | 5689 |
| Tilapia woosnami Boulenger, 1911 | Sargochromis codringtonii | 5693 |
| Haplochromis worthingtoni Regan, 1929 | Haplochromis worthingtoni | 4983 |
| Pseudotropheus xanstomachus Stauffer & Boltz, 1989 | Maylandia xanstomachus | 27596 |
| Melanochromis xanthodigma Bowers & Stauffer, 1997 | Melanochromis baliodigma | 86864 |
| Lithochromis xanthopteryx Seehausen & Bouton, 1998 | Haplochromis xanthopteryx | 27668 |
| Metriaclima xanthos Ciccotto, Konings & Stauffer, 2011 | Maylandia xanthos | 86409 |
| Petrotilapia xanthos Lundeba, Stauffer & Konings, 2011 | Petrotilapia xanthos | 87181 |
| Paratilapia xenodon Nichols & Griscom, 1917 | Heterochromis multidens | 52307 |
| Bayonia xenodonta Boulenger, 1911 | Haplochromis bicolor | 5662 |
| Haplochromis xenognathus Greenwood, 1957 | Haplochromis xenognathus | 4983 |
| Haplochromis xenostoma Regan, 1922 | Haplochromis xenostoma | 4983 |
| Pelmatochromis xenotilapiaformis Borodin, 1931 | Callochromis macrops | 5608 |
| Amphilophus xiloaensis Stauffer & McKaye, 2002 | Amphilophus xiloaensis | 36377 |
| Krobia xinguensis Kullander, 2012 | Krobia xinguensis | 89398 |
| Retroculus xinguensis Gosse, 1971 | Retroculus xinguensis | 36377 |
| Crenicichla yaha Casciotta, Almirón & Gómez, 2006 | Crenicichla yaha | 75970 |
| Australoheros ykeregua Říčan, Piálek, Almirón & Casciotta, 2011 | Australoheros ykeregua | 87600 |
| Crenicichla ypo Casciotta, Almirón, Piálek, Gómez & Říčan, 2010 | Crenicichla ypo | 85167 |
| Cichlasoma zaliosum Barlow, 1976 | Amphilophus zaliosus | 7335 |
| Paratilapia zambesensis Gilchrist & Thompson, 1917 | Serranochromis jallae | 128638 |
| Acara zamorensis Regan, 1905 | Bujurquina zamorensis | 36377 |
| Cichlasoma zarskei Ottoni, 2011 | Cichlasoma zarskei | 88917 |
| Tilapia zebra Boulenger, 1899 | Maylandia zebra | 5684 |
| Trematocara zebra De Vos, Nshombo & Thys van den Audenaerde, 1996 | Trematocara zebra | 27631 |
| Crenicichla zebrina Montaña, López-Fernández & Taphorn, 2008 | Crenicichla zebrina | 78579 |
| Labidochromis zebroides Lewis, 1982 | Labidochromis zebroides | 5653 |
| Microchromis zebroides Johnson, 1975 | Cynotilapia zebroides | 119465 |
| Acerina zillii Gervais, 1848 | Coptodon zillii | 5163 |
| Cichlasoma zonatum Meek, 1905 | Vieja zonata | 7335 |
| Cyprichromis zonatus Takahashi, Hori & Nakaya, 2002 | Cyprichromis zonatus | 46826 |