| Order | Family | Species | Occurrence | FishBase name | Name(s) in Territory |
|---|---|---|---|---|---|
| Pleuronectiformes | Achiridae | Achirus mazatlanus | native | Mazatlan sole | Spanish : Sol |
| Acipenseriformes | Acipenseridae | Acipenser desotoi | native | Gulf sturgeon | |
| Acipenseriformes | Acipenseridae | Acipenser medirostris | native | Green sturgeon | Spanish : Esturión verde |
| Acipenseriformes | Acipenseridae | Acipenser transmontanus | native | White sturgeon | Spanish : Esturión blanco |
| Cypriniformes | Leuciscidae | Agosia chrysogaster | native | Longfin dace | |
| Cypriniformes | Leuciscidae | Algansea amecae | endemic | Ameca chub | |
| Cypriniformes | Leuciscidae | Algansea aphanea | native | Riffle chub | |
| Cypriniformes | Leuciscidae | Algansea avia | native | Remote chub | |
| Cypriniformes | Leuciscidae | Algansea barbata | native | Lerma chub | |
| Cypriniformes | Leuciscidae | Algansea lacustris | native | Pátzcuaro chub | |
| Cypriniformes | Leuciscidae | Algansea monticola | native | Mountain chub | |
| Cypriniformes | Leuciscidae | Algansea popoche | native | Popoche chub | |
| Cypriniformes | Leuciscidae | Algansea tincella | native | Spottail chub | |
| Cyprinodontiformes | Goodeidae | Allodontichthys hubbsi | endemic | Whitepatched splitfin | |
| Cyprinodontiformes | Goodeidae | Allodontichthys polylepis | endemic | Finescale splitfin | |
| Cyprinodontiformes | Goodeidae | Allodontichthys tamazulae | endemic | Tuxpan splitfin | |
| Cyprinodontiformes | Goodeidae | Allodontichthys zonistius | endemic | Bandfin splitfin | |
| Cyprinodontiformes | Goodeidae | Alloophorus robustus | endemic | Bulldog goodeid | |
| Cyprinodontiformes | Goodeidae | Allotoca catarinae | endemic | Catarina allotoca | |
| Cyprinodontiformes | Goodeidae | Allotoca diazi | endemic | Patzcuaro allotoca | |
| Cyprinodontiformes | Goodeidae | Allotoca dugesii | endemic | Opal allotoca | |
| Cyprinodontiformes | Goodeidae | Allotoca goslinei | endemic | Banded allotoca | |
| Cyprinodontiformes | Goodeidae | Allotoca maculata | endemic | Blackspot allotoca | |
| Cyprinodontiformes | Goodeidae | Allotoca meeki | endemic | Zirahuen allotica | |
| Cyprinodontiformes | Goodeidae | Allotoca regalis | endemic | Royal Splitfin | |
| Cyprinodontiformes | Goodeidae | Allotoca zacapuensis | native | Zacapu allotoca | |
| Clupeiformes | Alosidae | Alosa sapidissima | introduced | American shad | Spanish : Sábalo americano |
| Cichliformes | Cichlidae | Amatitlania nigrofasciata | introduced | Convict cichlid | |
| Centrarchiformes | Centrarchidae | Ambloplites rupestris | introduced | Rock bass | |
| Cyprinodontiformes | Goodeidae | Ameca splendens | endemic | Butterfly splitfin | |
| Siluriformes | Ictaluridae | Ameiurus melas | native | Black bullhead | Spanish : Bagre |
| Siluriformes | Ictaluridae | Ameiurus natalis | introduced | Yellow bullhead | |
| Cichliformes | Cichlidae | Amphilophus istlanus | endemic | Spanish : Mojarra | |
| Cichliformes | Cichlidae | Amphilophus trimaculatus | native | Three spot cichlid | |
| Cyprinodontiformes | Anablepidae | Anableps dowii | native | Pacific foureyed fish | |
| Clupeiformes | Engraulidae | Anchoa curta | native | Short anchovy | Spanish : Anchoa corta |
| Clupeiformes | Engraulidae | Anchoa parva | native | Little anchovy | |
| Clupeiformes | Engraulidae | Anchoa walkeri | native | Persistent anchovy | Spanish : Anchoa de Walker |
| Anguilliformes | Anguillidae | Anguilla rostrata | native | American eel | |
| Eupercaria/misc | Sciaenidae | Aplodinotus grunniens | native | Freshwater drum | |
| Siluriformes | Ariidae | Ariopsis assimilis | native | Mayan sea catfish | |
| Siluriformes | Ariidae | Ariopsis seemanni | native | Tete sea catfish | Spanish : Bagre tete |
| Cichliformes | Cichlidae | Astatheros macracanthus | native | Blackthroat cichlid | |
| Characiformes | Acestrorhamphidae | Astyanax acatlanensis | native | ||
| Characiformes | Acestrorhamphidae | Astyanax aeneus | native | Banded tetra | |
| Characiformes | Acestrorhamphidae | Astyanax altior | native | Yucatan tetra | |
| Characiformes | Acestrorhamphidae | Astyanax angustifrons | native | ||
| Characiformes | Acestrorhamphidae | Astyanax argentatus | native | Texan tetra | Spanish : Sardinita tejana |
| Characiformes | Acestrorhamphidae | Astyanax bacalarensis | native | ||
| Characiformes | Acestrorhamphidae | Astyanax brevimanus | native | Quiché tetra | |
| Characiformes | Acestrorhamphidae | Astyanax caballeroi | native | Catemaco characin | |
| Characiformes | Acestrorhamphidae | Astyanax finitimus | native | Veracruz tetra | Spanish : Sardinita de Veracruz |
| Characiformes | Acestrorhamphidae | Astyanax jordani | endemic | Spanish : Sardina ciega | |
| Characiformes | Acestrorhamphidae | Astyanax mexicanus | native | Mexican tetra | |
| Characiformes | Acestrorhamphidae | Astyanax ocotal | native | ||
| Characiformes | Acestrorhamphidae | Astyanax rioverde | native | ||
| Characiformes | Acestrorhamphidae | Astyanax salvatoris | endemic | ||
| Characiformes | Acestrorhamphidae | Astyanax tamiahua | native | ||
| Characiformes | Acestrorhamphidae | Astyanax tehuacanensis | native | ||
| Cyprinodontiformes | Goodeidae | Ataeniobius toweri | endemic | Bluetail goodea | |
| Atheriniformes | Atherinopsidae | Atherinella alvarezi | native | Gulf silverside | |
| Atheriniformes | Atherinopsidae | Atherinella ammophila | native | La Palma silverside | |
| Atheriniformes | Atherinopsidae | Atherinella balsana | native | Balsas silverside | |
| Atheriniformes | Atherinopsidae | Atherinella callida | native | Cunning silverside | |
| Atheriniformes | Atherinopsidae | Atherinella crystallina | native | Blackfin silverside | |
| Atheriniformes | Atherinopsidae | Atherinella elegans | native | Fuerte silverside | |
| Atheriniformes | Atherinopsidae | Atherinella guatemalensis | native | Guatemala silverside | Spanish : Pejerrey guatemalteco |
| Atheriniformes | Atherinopsidae | Atherinella lisa | native | Naked silverside | |
| Atheriniformes | Atherinopsidae | Atherinella marvelae | native | Eyipantla silverside | |
| Atheriniformes | Atherinopsidae | Atherinella pellosemeion | native | Mancuernas silverside | |
| Atheriniformes | Atherinopsidae | Atherinella sallei | native | Large-eye silverside | |
| Atheriniformes | Atherinopsidae | Atherinella schultzi | native | Chimalapa silverside | |
| Lepisosteiformes | Lepisosteidae | Atractosteus spatula | native | Alligator gar | Spanish : Catán |
| Lepisosteiformes | Lepisosteidae | Atractosteus tropicus | native | Tropical gar | Spanish : Pejelagarto |
| Gobiiformes | Gobiidae | Awaous banana | native | River goby | |
| Cypriniformes | Leuciscidae | Aztecula sallaei | endemic | Aztec chub | Spanish : Carpita azteca |
| Siluriformes | Ariidae | Bagre pinnimaculatus | native | Red sea catfish | Spanish : Bagre de gavia |
| Eupercaria/misc | Sciaenidae | Bairdiella chrysoura | native | Goldtail croaker | |
| Gobiiformes | Gobiidae | Bathygobius soporator | native | Frillfin goby | |
| Batrachoidiformes | Batrachoididae | Batrachoides goldmani | native | Mexican freshwater toadfish | |
| Batrachoidiformes | Batrachoididae | Batrachoides waltersi | native | Walter's toadfish | Spanish : Sapo de Walter |
| Cyprinodontiformes | Poeciliidae | Belonesox belizanus | native | Top minnow | |
| Cyprinodontiformes | Poeciliidae | Brachyrhaphis hartwegi | native | Soconusco gambusia | |
| Characiformes | Bryconidae | Brycon guatemalensis | native | Machaca | |
| Gobiiformes | Eleotridae | Caecieleotris morrisi | native | ||
| Cypriniformes | Leuciscidae | Campostoma anomalum | native | Central stoneroller | |
| Cypriniformes | Leuciscidae | Campostoma ornatum | native | Mexican stoneroller | |
| Cypriniformes | Cyprinidae | Carassius auratus | introduced | Goldfish | Spanish : Carpa dorada |
| Carcharhiniformes | Carcharhinidae | Carcharhinus leucas | native | Bull shark | Spanish : Sarda |
| Cyprinodontiformes | Poeciliidae | Carlhubbsia kidderi | native | Champoton gambusia | |
| Cypriniformes | Catostomidae | Carpiodes carpio | native | River carpsucker | |
| Cypriniformes | Catostomidae | Carpiodes cyprinus | introduced | Quillback | |
| Siluriformes | Ariidae | Cathorops aguadulce | native | Estuarine sea catfish | Spanish : Coruco |
| Siluriformes | Ariidae | Cathorops fuerthii | native | Congo sea catfish | Spanish : Bagre congo |
| Siluriformes | Ariidae | Cathorops kailolae | native | Papillate sea catfish | |
| Siluriformes | Ariidae | Cathorops liropus | native | Conguito sea catfish | |
| Siluriformes | Ariidae | Cathorops raredonae | native | Curator sea catfish | |
| Cypriniformes | Catostomidae | Catostomus bernardini | native | Yaqui sucker | |
| Cypriniformes | Catostomidae | Catostomus cahita | native | Cahita sucker | Spanish : Matalote cahita |
| Cypriniformes | Catostomidae | Catostomus clarkii | native | Desert sucker | |
| Cypriniformes | Catostomidae | Catostomus conchos | native | Spanish : Matalote conchos | |
| Cypriniformes | Catostomidae | Catostomus insignis | native | Sonora sucker | |
| Cypriniformes | Catostomidae | Catostomus leopoldi | native | Bavispe sucker | Spanish : Matalote del Bavispe |
| Cypriniformes | Catostomidae | Catostomus nebuliferus | native | Nazas sucker | |
| Cypriniformes | Catostomidae | Catostomus plebeius | native | Rio Grande sucker | |
| Cypriniformes | Catostomidae | Catostomus wigginsi | endemic | Opata sucker | Spanish : Matalote opata |
| Carangaria/misc | Centropomidae | Centropomus ensiferus | native | Swordspine snook | |
| Carangaria/misc | Centropomidae | Centropomus nigrescens | native | Black snook | Spanish : Róbalo prieto |
| Carangaria/misc | Centropomidae | Centropomus parallelus | native | Fat snook | Spanish : Robalo chucumite |
| Carangaria/misc | Centropomidae | Centropomus pectinatus | native | Tarpon snook | Spanish : Constantino |
| Carangaria/misc | Centropomidae | Centropomus undecimalis | native | Common snook | Spanish : Robalo blanco |
| Cyprinodontiformes | Goodeidae | Chapalichthys encaustus | endemic | Barred splitfin | |
| Cyprinodontiformes | Goodeidae | Chapalichthys pardalis | endemic | Polka-dot splitfin | |
| Cyprinodontiformes | Goodeidae | Chapalichthys peraticus | endemic | Alien splitfin | |
| Cyprinodontiformes | Goodeidae | Characodon audax | endemic | Bold characodon | |
| Cyprinodontiformes | Goodeidae | Characodon garmani | endemic | Parras characodon | Spanish : Parras Characodon |
| Cyprinodontiformes | Goodeidae | Characodon lateralis | endemic | Rainbow characodon | |
| Cichliformes | Cichlidae | Chiapaheros grammodes | native | ||
| Atheriniformes | Atherinopsidae | Chirostoma aculeatum | endemic | Scowling silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma arge | endemic | Largetooth silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma attenuatum | endemic | Slender silverside | Spanish : Charal |
| Atheriniformes | Atherinopsidae | Chirostoma bartoni | endemic | Alberca silverside | Spanish : Charal |
| Atheriniformes | Atherinopsidae | Chirostoma chapalae | endemic | Smallmouth silverside | Spanish : Charal |
| Atheriniformes | Atherinopsidae | Chirostoma charari | endemic | Least silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma compressum | endemic | Spanish : Pescado blanco | |
| Atheriniformes | Atherinopsidae | Chirostoma consocium | native | Ranch silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma contrerasi | native | Ajijic silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma copandaro | native | Spanish : Pescado blanco | |
| Atheriniformes | Atherinopsidae | Chirostoma estor | endemic | Pike silverside | Spanish : Pescado blanco |
| Atheriniformes | Atherinopsidae | Chirostoma grandocule | endemic | Bigeye silverside | Spanish : Charal |
| Atheriniformes | Atherinopsidae | Chirostoma humboldtianum | native | Shortfin silverside | Spanish : Pescado blanco |
| Atheriniformes | Atherinopsidae | Chirostoma jordani | native | Charal | Spanish : Charal |
| Atheriniformes | Atherinopsidae | Chirostoma labarcae | endemic | Sharpnose silverside | Spanish : Charal |
| Atheriniformes | Atherinopsidae | Chirostoma lucius | endemic | Longjaw silverside | Spanish : Pescado blanco |
| Atheriniformes | Atherinopsidae | Chirostoma melanoccus | native | Blunthead silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma patzcuaro | endemic | Patzcuaro silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma promelas | endemic | Blacknose silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma reseratum | native | ||
| Atheriniformes | Atherinopsidae | Chirostoma riojai | endemic | Toluca silverside | |
| Atheriniformes | Atherinopsidae | Chirostoma sphyraena | endemic | Bigmouth silverside | Spanish : Pescado blanco |
| Atheriniformes | Atherinopsidae | Chirostoma zirahuen | native | ||
| Cichliformes | Cichlidae | Chuco intermedium | native | Northern checkmark cichlid | |
| Cichliformes | Cichlidae | Cichlasoma geddesi | endemic | ||
| Cichliformes | Cichlidae | Cincelichthys pearsei | native | Pantano cichlid | Spanish : Zacatera |
| Pleuronectiformes | Cyclopsettidae | Citharichthys gilberti | native | Bigmouth sanddab | Spanish : Lenguado tapadero |
| Pleuronectiformes | Cyclopsettidae | Citharichthys uhleri | native | Voodoo whiff | |
| Cypriniformes | Leuciscidae | Codoma ornata | native | Ornate shiner | |
| Cichliformes | Cichlidae | Coptodon rendalli | introduced | Redbreast tilapia | Spanish : Mojarrita |
| Cichliformes | Cichlidae | Coptodon zillii | introduced | Redbelly tilapia | Spanish : Mojarra |
| Cichliformes | Cichlidae | Cribroheros robertsoni | native | False firemouth cichlid | |
| Cichliformes | Cichlidae | Cryptoheros chetumalensis | native | ||
| Gobiiformes | Gobiidae | Ctenogobius claytonii | native | Mexican goby | |
| Cypriniformes | Xenocyprididae | Ctenopharyngodon idella | introduced | Grass carp | Spanish : Carpa herbivora |
| Cyprinodontiformes | Cyprinodontidae | Cualac tessellatus | endemic | Checkered pupfish | Spanish : Cachorrito de Media Luna |
| Cypriniformes | Catostomidae | Cycleptus elongatus | native | Blue sucker | |
| Cyprinodontiformes | Rivulidae | Cynodonichthys hendrichsi | native | ||
| Cyprinodontiformes | Rivulidae | Cynodonichthys myersi | native | ||
| Cyprinodontiformes | Rivulidae | Cynodonichthys tenuis | native | Dogtooth rivulus | |
| Cypriniformes | Leuciscidae | Cyprinella alvarezdelvillari | endemic | Tepehuan shiner | Spanish : Sardinita bronze del Nazas |
| Cypriniformes | Leuciscidae | Cyprinella bocagrande | endemic | Largemouth shiner | Spanish : Sardinita bocagrande |
| Cypriniformes | Leuciscidae | Cyprinella formosa | native | Beautiful shiner | Spanish : Sardinita de Santa Maria |
| Cypriniformes | Leuciscidae | Cyprinella garmani | native | Gibbous shiner | |
| Cypriniformes | Leuciscidae | Cyprinella lutrensis | native | Red shiner | |
| Cypriniformes | Leuciscidae | Cyprinella panarcys | endemic | Conchos shiner | |
| Cypriniformes | Leuciscidae | Cyprinella proserpina | native | Proserpine shiner | |
| Cypriniformes | Leuciscidae | Cyprinella rutila | endemic | Mexican red shiner | |
| Cypriniformes | Leuciscidae | Cyprinella xanthicara | endemic | Cuatro Cienegas shiner | Spanish : Cuatro Cienegas Shiner |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon albivelis | native | Whitefin pupfish | Spanish : Cachorrito aletas blancas |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon alvarezi | endemic | Potosi pupfish | Spanish : Perrito de Potosi |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon artifrons | native | Yucatan pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon atrorus | endemic | Bolson pupfish | Spanish : Perrito del Bolson |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon beltrani | endemic | Blackfin pupfish | Spanish : Cachorrito lodero |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon bifasciatus | endemic | Cuatro Cienegas pupfish | Spanish : Perrito de Cuatro Cienegas |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon bobmilleri | endemic | San Ignacio pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon ceciliae | endemic | Villa Lopez pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon esconditus | native | Hidden pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon eximius | native | Conchos pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon fontinalis | endemic | Carbonera pupfish | Spanish : Perrito de Carbonera |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon julimes | native | ||
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon labiosus | endemic | Thicklip pupfish | Spanish : Cachorrito cangrejero |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon latifasciatus | endemic | Parras pupfish | Spanish : Perrito de Parras |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon longidorsalis | endemic | La Palma pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon macrolepis | endemic | Largescale pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon macularius | native | Desert pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon maya | endemic | Maya pupfish | Spanish : Cachorrito gigante |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon meeki | endemic | Mezquital pupfish | Spanish : Cachorrito de Mezquital |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon nazas | endemic | Nazas pupfish | Spanish : Cachorrito del Aguanaval |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon pachycephalus | endemic | Bighead pupfish | Spanish : Cachorrito cabezon |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon pisteri | native | Palomas pupfish | Spanish : Cachorrito de Guzmán |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon salvadori | native | Bocochi pupfish | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon simus | endemic | Boxer pupfish | Spanish : Cachorrito boxeador |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon suavium | native | ||
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon variegatus | native | Sheepshead minnow | |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon verecundus | endemic | Largefin pupfish | Spanish : Cachorrito de dorsal larga |
| Cyprinodontiformes | Cyprinodontidae | Cyprinodon veronicae | endemic | Charco Palma pupfish | |
| Cypriniformes | Cyprinidae | Cyprinus carpio | introduced | Common carp | Spanish : Carpa común |
| Mugiliformes | Mugilidae | Dajaus monticola | native | Mountain mullet | Spanish : Lisa de rio |
| Cypriniformes | Leuciscidae | Dionda diaboli | native | Devils River minnow | |
| Cypriniformes | Leuciscidae | Dionda episcopa | native | Roundnose minnow | |
| Cypriniformes | Leuciscidae | Dionda melanops | native | Spotted minnow | |
| Gobiiformes | Eleotridae | Dormitator latifrons | native | Pacific fat sleeper | Spanish : Guavina |
| Clupeiformes | Dorosomatidae | Dorosoma anale | native | Mexican river gizzard shad | |
| Clupeiformes | Dorosomatidae | Dorosoma cepedianum | native | American gizzard shad | |
| Clupeiformes | Dorosomatidae | Dorosoma petenense | native | Threadfin shad | Spanish : Sábalo de hilo |
| Clupeiformes | Dorosomatidae | Dorosoma smithi | native | Pacific gizzard shad | |
| Gobiiformes | Eleotridae | Eleotris pisonis | native | Spinycheek sleeper | |
| Petromyzontiformes | Petromyzontidae | Entosphenus tridentatus | native | Pacific lamprey | Spanish : Lamprea del Pacifico |
| Perciformes/Percoidei | Percidae | Etheostoma australe | endemic | Conchos darter | Spanish : Dardo de Conchos |
| Perciformes/Percoidei | Percidae | Etheostoma grahami | native | Rio Grande darter | |
| Perciformes/Percoidei | Percidae | Etheostoma lugoi | native | Tufa darter | Spanish : Perca de toba |
| Perciformes/Percoidei | Percidae | Etheostoma pottsii | native | Chihuahua darter | |
| Perciformes/Percoidei | Percidae | Etheostoma segrex | native | Río Salado darter | Spanish : Perca del Salado |
| Eupercaria/misc | Gerreidae | Eucinostomus argenteus | native | Silver mojarra | Spanish : Mojarra de ley |
| Eupercaria/misc | Gerreidae | Eucinostomus currani | native | Pacific flagfin mojarra | Spanish : Mojarra tricolor |
| Eupercaria/misc | Gerreidae | Eucinostomus gracilis | native | Graceful mojarra | Spanish : Mojarra charrita |
| Eupercaria/misc | Gerreidae | Eugerres brevimanus | native | Short fin mojarra | Spanish : Mojarra de aleta corta |
| Eupercaria/misc | Gerreidae | Eugerres mexicanus | native | English : Lacandon mojarra; English : White mojarra; | |
| Eupercaria/misc | Gerreidae | Eugerres plumieri | native | Striped mojarra | |
| Cypriniformes | Leuciscidae | Evarra bustamantei | endemic | Mexican Dace | |
| Cypriniformes | Leuciscidae | Evarra eigenmanni | native | Plateau chub | |
| Cypriniformes | Leuciscidae | Evarra tlahuacensis | native | Endorheic chub | |
| Cyprinodontiformes | Cyprinodontidae | Floridichthys polyommus | native | Ocellated killifish | |
| Cyprinodontiformes | Fundulidae | Fundulus grandis | native | Gulf killifish | |
| Cyprinodontiformes | Fundulidae | Fundulus grandissimus | endemic | Giant killifish | |
| Cyprinodontiformes | Fundulidae | Fundulus heteroclitus | native | Mummichog | |
| Cyprinodontiformes | Fundulidae | Fundulus lima | endemic | Killifish | |
| Cyprinodontiformes | Fundulidae | Fundulus persimilis | endemic | Yucatan killifish | |
| Cyprinodontiformes | Fundulidae | Fundulus philpisteri | native | ||
| Cyprinodontiformes | Fundulidae | Fundulus zebrinus | introduced | Plains killifish | |
| Cyprinodontiformes | Poeciliidae | Gambusia affinis | native | Mosquitofish | |
| Cyprinodontiformes | Poeciliidae | Gambusia alvarezi | native | Yellowfin gambusia | Spanish : Guayacon de San Gregorio |
| Cyprinodontiformes | Poeciliidae | Gambusia atrora | native | Blackfin gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia aurata | endemic | Golden gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia echeagarayi | endemic | Maya gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia eurystoma | endemic | Widemouth gambusia | Spanish : Guayacon Bocon |
| Cyprinodontiformes | Poeciliidae | Gambusia hurtadoi | native | Crescent gambusia | Spanish : Guayacon de Hacienda Dolores |
| Cyprinodontiformes | Poeciliidae | Gambusia krumholzi | endemic | Spotfin gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia longispinis | endemic | Cuatrocienegas gambusia | Spanish : Guayacon de Cuatro Cienegas |
| Cyprinodontiformes | Poeciliidae | Gambusia marshi | endemic | Robust gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia myersi | native | Myers mosquitofish | |
| Cyprinodontiformes | Poeciliidae | Gambusia panuco | endemic | Panuco gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia quadruncus | native | Four hooked mosquitofish | English : llanos mosquitofish |
| Cyprinodontiformes | Poeciliidae | Gambusia regani | endemic | Forlon gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia senilis | native | Blotched gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia sexradiata | native | Teardrop mosquito | |
| Cyprinodontiformes | Poeciliidae | Gambusia speciosa | native | Tex-Mex gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia vittata | endemic | Gulf gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia yucatana | native | Yucatan gambusia | |
| Cyprinodontiformes | Poeciliidae | Gambusia zarskei | native | Chihuahua mosquitofish | |
| Cyprinodontiformes | Cyprinodontidae | Garmanella pulchra | native | Yucatan flagfish | |
| Perciformes/Gasterosteoidei | Gasterosteidae | Gasterosteus aculeatus | native | Three-spined stickleback | |
| Perciformes/Gasterosteoidei | Gasterosteidae | Gasterosteus microcephalus | native | ||
| Eupercaria/misc | Gerreidae | Gerres cinereus | native | Yellow fin mojarra | |
| Eupercaria/misc | Gerreidae | Gerres simillimus | native | Spanish : Mojarra plateada; Spanish : Mojarra rayada; | |
| Cypriniformes | Leuciscidae | Gila brevicauda | native | Shorttail chub | Spanish : Carpita cola corta |
| Cypriniformes | Leuciscidae | Gila conspersa | native | Nazas chub | |
| Cypriniformes | Leuciscidae | Gila ditaenia | native | Sonora chub | |
| Cypriniformes | Leuciscidae | Gila elegans | native | Bonytail | |
| Cypriniformes | Leuciscidae | Gila eremica | native | Desert chub | |
| Cypriniformes | Leuciscidae | Gila intermedia | native | Gila chub | |
| Cypriniformes | Leuciscidae | Gila minacae | native | Mexican roundtail chub | |
| Cypriniformes | Leuciscidae | Gila modesta | native | Salinas chub | Spanish : Charalito saltillo |
| Cypriniformes | Leuciscidae | Gila nigrescens | native | Chihuahua chub | Spanish : Charalito chihuahua |
| Cypriniformes | Leuciscidae | Gila pulchra | native | Conchos chub | |
| Cypriniformes | Leuciscidae | Gila purpurea | native | Yaqui chub | |
| Cypriniformes | Leuciscidae | Gila robusta | native | Roundtail chub | |
| Gobiiformes | Gobiidae | Gillichthys detrusus | native | ||
| Cyprinodontiformes | Goodeidae | Girardinichthys ireneae | endemic | ||
| Cyprinodontiformes | Goodeidae | Girardinichthys multiradiatus | endemic | Darkedged splitfin | |
| Cyprinodontiformes | Goodeidae | Girardinichthys viviparus | endemic | Chapultepec splitfin | Spanish : Mexclapique |
| Gobiesociformes | Gobiesocidae | Gobiesox fluviatilis | native | Mountain clingfish | |
| Gobiesociformes | Gobiesocidae | Gobiesox juniperoserrai | endemic | Peninsular clingfish | |
| Gobiesociformes | Gobiesocidae | Gobiesox mexicanus | native | Mexican clingfish | |
| Gobiiformes | Gobiidae | Gobioides peruanus | native | Peruvian eelgoby | |
| Gobiiformes | Eleotridae | Gobiomorus maculatus | native | Pacific sleeper | |
| Gobiiformes | Eleotridae | Gobiomorus polylepis | native | Finescale sleeper | |
| Gobiiformes | Gobiidae | Gobionellus microdon | native | Estuary goby | Spanish : Gobio |
| Gobiiformes | Gobiidae | Gobionellus oceanicus | native | Highfin goby | |
| Gobiiformes | Gobiidae | Gobiosoma yucatanum | native | Yucatan goby | |
| Cyprinodontiformes | Goodeidae | Goodea atripinnis | endemic | Blackfin goodea | |
| Cyprinodontiformes | Goodeidae | Goodea gracilis | endemic | Dusky splitfin | |
| Cyprinodontiformes | Goodeidae | Goodea luitpoldii | endemic | Green goodea | Spanish : Tiro de Patzcuaro |
| Gymnotiformes | Gymnotidae | Gymnotus carapo | native | Banded knifefish | |
| Gymnotiformes | Gymnotidae | Gymnotus maculosus | native | Spotted knifefish | |
| Gobiiformes | Eleotridae | Hemieleotris latifasciata | native | Pygmy sleeper | |
| Cichliformes | Cichlidae | Herichthys bartoni | endemic | Barton's cichlid | Spanish : Mojarra caracolera |
| Cichliformes | Cichlidae | Herichthys carpintis | endemic | Lowland cichlid | |
| Cichliformes | Cichlidae | Herichthys cyanoguttatus | introduced | Rio Grande cichlid | |
| Cichliformes | Cichlidae | Herichthys deppii | endemic | Nautla cichlid | |
| Cichliformes | Cichlidae | Herichthys labridens | endemic | Curve-bar cichlid | Spanish : Mojarra |
| Cichliformes | Cichlidae | Herichthys minckleyi | endemic | Minkley's cichlid | Spanish : Mojarra caracolera de Cuatro Cienegas |
| Cichliformes | Cichlidae | Herichthys molango | native | English : Aztec cichlid | |
| Cichliformes | Cichlidae | Herichthys pame | native | Spanish : Mojarra caracolera blanca | |
| Cichliformes | Cichlidae | Herichthys pantostictus | endemic | Chairel cichlid | Spanish : Mojarra |
| Cichliformes | Cichlidae | Herichthys pratinus | native | English : Green cichlid | |
| Cichliformes | Cichlidae | Herichthys steindachneri | endemic | Steindachner's cichlid | Spanish : Mojarra |
| Cichliformes | Cichlidae | Herichthys tamasopoensis | endemic | Tamasopo cichlid | |
| Cichliformes | Cichlidae | Herichthys tepehua | native | ||
| Cichliformes | Cichlidae | Herichthys teporatus | native | ||
| Cyprinodontiformes | Poeciliidae | Heterandria tuxtlaensis | endemic | Livebearing fish | |
| Cyprinodontiformes | Poeciliidae | Heterophallus milleri | native | Grijalva gambusia | |
| Cyprinodontiformes | Poeciliidae | Heterophallus rachovii | endemic | Coatzacoalcos gambusia | |
| Cyprinodontiformes | Goodeidae | Hubbsina turneri | endemic | Highland splitfin | |
| Characiformes | Acestrorhamphidae | Hyphessobrycon compressus | native | Mayan tetra | |
| Cypriniformes | Xenocyprididae | Hypophthalmichthys molitrix | introduced | Silver carp | Spanish : Carpa plateada |
| Cypriniformes | Xenocyprididae | Hypophthalmichthys nobilis | introduced | Bighead carp | Spanish : Carpa cabezona |
| Beloniformes | Hemiramphidae | Hyporhamphus meeki | native | American halfbeak | |
| Beloniformes | Hemiramphidae | Hyporhamphus mexicanus | native | Mexican halfbeak | |
| Beloniformes | Hemiramphidae | Hyporhamphus rosae | native | California halfbeak | Spanish : Pajarito de California |
| Siluriformes | Ictaluridae | Ictalurus australis | endemic | Pánuco catfish | Spanish : Bagre del Panuco |
| Siluriformes | Ictaluridae | Ictalurus balsanus | endemic | Balsas catfish | Spanish : Bagre |
| Siluriformes | Ictaluridae | Ictalurus dugesii | endemic | Lerma catfish | Spanish : Bagre |
| Siluriformes | Ictaluridae | Ictalurus furcatus | native | Blue catfish | Spanish : Bagre azul |
| Siluriformes | Ictaluridae | Ictalurus lupus | native | Headwater catfish | |
| Siluriformes | Ictaluridae | Ictalurus meridionalis | native | Southern blue catfish | |
| Siluriformes | Ictaluridae | Ictalurus mexicanus | endemic | Rio Verde catfish | Spanish : Bagre de Rio Verde |
| Siluriformes | Ictaluridae | Ictalurus ochoterenai | endemic | Chapala catfish | Spanish : Bagre |
| Siluriformes | Ictaluridae | Ictalurus pricei | native | Yaqui catfish | Spanish : Bagre de Yaqui |
| Siluriformes | Ictaluridae | Ictalurus punctatus | native | Channel catfish | Spanish : Azul |
| Cypriniformes | Catostomidae | Ictiobus bubalus | native | Smallmouth buffalo | |
| Cypriniformes | Catostomidae | Ictiobus labiosus | native | Fleshylip buffalo | |
| Cypriniformes | Catostomidae | Ictiobus meridionalis | native | Usumacinta buffalo | Spanish : Chopa |
| Cypriniformes | Catostomidae | Ictiobus niger | native | Black buffalo | |
| Cyprinodontiformes | Goodeidae | Ilyodon cortesae | native | Freckled splitfin | |
| Cyprinodontiformes | Goodeidae | Ilyodon furcidens | endemic | Goldbreast splitfin | |
| Cyprinodontiformes | Goodeidae | Ilyodon lennoni | endemic | Chacambero splitfin | |
| Cyprinodontiformes | Goodeidae | Ilyodon whitei | endemic | Balsas splitfin | |
| Cyprinodontiformes | Goodeidae | Ilyodon xantusi | native | Limones splitfin | |
| Mugiliformes | Mugilidae | Joturus pichardi | native | Bobo mullet | Spanish : Liza bobo |
| Cichliformes | Cichlidae | Kihnichthys ufermanni | native | Usumacinta cichlid | |
| Cyprinodontiformes | Rivulidae | Kryptolebias marmoratus | native | Mangrove rivulus | |
| Siluriformes | Lacantuniidae | Lacantunia enigmatica | native | Chiapas catfish | English : Chiapas catfish |
| Eupercaria/misc | Sparidae | Lagodon rhomboides | native | Pinfish | Spanish : Chopa espina |
| Lepisosteiformes | Lepisosteidae | Lepisosteus osseus | native | Longnose gar | Spanish : Pejelagarto |
| Centrarchiformes | Centrarchidae | Lepomis auritus | introduced | Redbreast sunfish | |
| Centrarchiformes | Centrarchidae | Lepomis cyanellus | native | Green sunfish | |
| Centrarchiformes | Centrarchidae | Lepomis gulosus | introduced | Warmouth | |
| Centrarchiformes | Centrarchidae | Lepomis macrochirus | native | Bluegill | |
| Centrarchiformes | Centrarchidae | Lepomis megalotis | native | Longear sunfish | |
| Clupeiformes | Dorosomatidae | Lile stolifera | native | Striped herring | Spanish : Sardina rayada |
| Cyprinodontiformes | Fundulidae | Lucania interioris | endemic | Cuatrocienegas killifish | Spanish : Sardinilla Cuatro Cienegas |
| Cyprinodontiformes | Fundulidae | Lucania parva | native | Rainwater killifish | |
| Cypriniformes | Leuciscidae | Macrhybopsis aestivalis | native | Speckled chub | |
| Cichliformes | Cichlidae | Maskaheros argenteus | endemic | White cichlid | |
| Cichliformes | Cichlidae | Maskaheros regani | endemic | Almoloya cichlid | Spanish : Mojarra pinto |
| Cichliformes | Cichlidae | Mayaheros aguadae | endemic | ||
| Cichliformes | Cichlidae | Mayaheros alborus | endemic | ||
| Cichliformes | Cichlidae | Mayaheros amarus | endemic | ||
| Cichliformes | Cichlidae | Mayaheros beani | endemic | Green guapote | Spanish : Mojarra verde |
| Cichliformes | Cichlidae | Mayaheros cienagae | endemic | ||
| Cichliformes | Cichlidae | Mayaheros conchitae | endemic | ||
| Cichliformes | Cichlidae | Mayaheros ericymba | endemic | Mojarra de Bulha | Spanish : Mojarra de Bulha |
| Cichliformes | Cichlidae | Mayaheros mayorum | endemic | ||
| Cichliformes | Cichlidae | Mayaheros stenozonus | native | ||
| Cichliformes | Cichlidae | Mayaheros troschelii | native | ||
| Cichliformes | Cichlidae | Mayaheros urophthalmus | native | Mexican mojarra | Spanish : Castarrica |
| Cichliformes | Cichlidae | Mayaheros zebra | native | ||
| Elopiformes | Megalopidae | Megalops atlanticus | native | Tarpon | |
| Cyprinodontiformes | Cyprinodontidae | Megupsilon aporus | endemic | Catarina pupfish | Spanish : Cachorrito Enano de Potosi |
| Atheriniformes | Atherinopsidae | Menidia audens | native | Mississippi silverside | |
| Atheriniformes | Atherinopsidae | Menidia beryllina | native | Inland silverside | |
| Atheriniformes | Atherinopsidae | Menidia colei | native | Golden silverside | |
| Centrarchiformes | Centrarchidae | Micropterus dolomieu | introduced | Smallmouth bass | |
| Centrarchiformes | Centrarchidae | Micropterus salmoides | native | Largemouth black bass | Spanish : Huro |
| Cyprinodontiformes | Rivulidae | Millerichthys robustus | endemic | Mexican rivulus | Spanish : Rivulus almirante |
| Cypriniformes | Leuciscidae | Miniellus chihuahua | native | Chihuahua shiner | |
| Cypriniformes | Leuciscidae | Miniellus stramineus | native | Sand shiner | |
| Eupercaria/misc | Moronidae | Morone chrysops | introduced | White bass | |
| Eupercaria/misc | Moronidae | Morone saxatilis | introduced | Striped bass | Spanish : Lubina estriada |
| Cypriniformes | Catostomidae | Moxostoma albidum | native | Longlip jumprock | |
| Cypriniformes | Catostomidae | Moxostoma austrinum | native | Mexican redhorse | Spanish : Matalote chuime |
| Cypriniformes | Catostomidae | Moxostoma mascotae | native | Mascota jumprock | |
| Mugiliformes | Mugilidae | Mugil cephalus | native | Flathead grey mullet | Spanish : Liza cabezona |
| Mugiliformes | Mugilidae | Mugil curema | native | White mullet | Spanish : Lisa blanca |
| Cypriniformes | Xenocyprididae | Mylopharyngodon piceus | introduced | Black carp | Spanish : Caracolera |
| Cypriniformes | Leuciscidae | Notropis aguirrepequenoi | endemic | Soto la Marina shiner | Spanish : Sardinita del Pilon |
| Cypriniformes | Leuciscidae | Notropis amabilis | native | Texas shiner | |
| Cypriniformes | Leuciscidae | Notropis amecae | endemic | Ameca shiner | |
| Cypriniformes | Leuciscidae | Notropis aulidion | endemic | Durango shiner | |
| Cypriniformes | Leuciscidae | Notropis boucardi | native | Balsas shiner | |
| Cypriniformes | Leuciscidae | Notropis braytoni | native | Tamaulipas shiner | |
| Cypriniformes | Leuciscidae | Notropis buchanani | native | Ghost shiner | |
| Cypriniformes | Leuciscidae | Notropis calabazas | native | Calabazas shiner | |
| Cypriniformes | Leuciscidae | Notropis calientis | endemic | Yellow shiner | |
| Cypriniformes | Leuciscidae | Notropis cumingii | native | Atoyac chub | |
| Cypriniformes | Leuciscidae | Notropis grandis | native | Zacapu shiner | English : Zacapu shiner |
| Cypriniformes | Leuciscidae | Notropis imeldae | endemic | Spanish : Sardinita de Rio Verde | |
| Cypriniformes | Leuciscidae | Notropis jemezanus | native | Rio Grande shiner | |
| Cypriniformes | Leuciscidae | Notropis marhabatiensis | native | Maravatío shiner | English : Maravatío shiner |
| Cypriniformes | Leuciscidae | Notropis moralesi | endemic | Papaloapan chub | Spanish : Sardinita de Tepelmene |
| Cypriniformes | Leuciscidae | Notropis nazas | native | Nazas shiner | |
| Cypriniformes | Leuciscidae | Notropis saladonis | native | Salado shiner | Spanish : Sardinita de Salado |
| Cypriniformes | Leuciscidae | Notropis tropicus | native | Pygmy shiner | |
| Carangiformes | Carangidae | Oligoplites saurus | native | Leatherjacket | Spanish : Zapatero sietecueros |
| Salmoniformes | Salmonidae | Oncorhynchus chrysogaster | endemic | Mexican golden trout | |
| Salmoniformes | Salmonidae | Oncorhynchus kisutch | native | Coho salmon | Spanish : Salmón plateado |
| Salmoniformes | Salmonidae | Oncorhynchus mykiss | native | Rainbow trout | Spanish : Trucha arcoiris |
| Synbranchiformes | Synbranchidae | Ophisternon aenigmaticum | native | Obscure swamp eel | |
| Synbranchiformes | Synbranchidae | Ophisternon infernale | endemic | Blind swamp eel | Spanish : Anguila ciega |
| Cichliformes | Cichlidae | Oreochromis aureus | introduced | Blue tilapia | Spanish : Tilapia azul |
| Cichliformes | Cichlidae | Oreochromis mossambicus | introduced | Mozambique tilapia | Spanish : Mojarra |
| Cichliformes | Cichlidae | Oreochromis niloticus | introduced | Nile tilapia | Spanish : Mojarra |
| Cichliformes | Cichlidae | Oscura heterospila | native | Montecristo cichlid | Spanish : Colorado |
| Cichliformes | Cichlidae | Parachromis friedrichsthalii | native | Yellowjacket cichlid | Spanish : Castarrica |
| Cichliformes | Cichlidae | Parachromis managuensis | introduced | Jaguar guapote | Spanish : Pinta |
| Cichliformes | Cichlidae | Paraneetroplus bulleri | endemic | Sarabia cichlid | Spanish : Corrientero |
| Cichliformes | Cichlidae | Paraneetroplus gibbiceps | endemic | Teapa cichlid | Spanish : Corrientero verde |
| Cichliformes | Cichlidae | Paraneetroplus nebulifer | endemic | Papaloapan cichlid | Spanish : Chonga |
| Perciformes/Percoidei | Percidae | Percina macrolepida | native | Bigscale logperch | |
| Cichliformes | Cichlidae | Petenia splendida | native | Bay snook | Spanish : Tenguajagua |
| Cypriniformes | Cyprinidae | Pethia conchonius | introduced | Rosy barb | |
| Cyprinodontiformes | Poeciliidae | Phallichthys fairweatheri | native | Picotee livebearer | |
| Cypriniformes | Leuciscidae | Pimephales promelas | native | Fathead minnow | |
| Cypriniformes | Leuciscidae | Pimephales vigilax | native | Bullhead minnow | |
| Atheriniformes | Atherinopsidae | Poblana alchichica | endemic | Alchichica silverside | Spanish : Charal de Alchichica |
| Atheriniformes | Atherinopsidae | Poblana ferdebueni | endemic | Chignahuapan silverside | |
| Atheriniformes | Atherinopsidae | Poblana letholepis | endemic | La Preciosa silverside | Spanish : Charal de la Preciosa |
| Atheriniformes | Atherinopsidae | Poblana squamata | endemic | Quechulac silverside | Spanish : Charal de Quechulac |
| Cyprinodontiformes | Poeciliidae | Poecilia butleri | native | Pacific molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia catemaconis | endemic | Catemaco molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia chica | endemic | Dwarf molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia formosa | native | Amazon molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia kykesis | native | Usumacinta molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia latipinna | native | Sailfin molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia latipunctata | endemic | Broadspotted molly | Spanish : Molly del Tamesi |
| Cyprinodontiformes | Poeciliidae | Poecilia maylandi | endemic | Balsas molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia mexicana | native | Shortfin molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia orri | native | Mangrove molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia reticulata | introduced | Guppy | |
| Cyprinodontiformes | Poeciliidae | Poecilia sphenops | native | Molly | |
| Cyprinodontiformes | Poeciliidae | Poecilia sulphuraria | endemic | Sulphur molly | Spanish : Molly del Teapa |
| Cyprinodontiformes | Poeciliidae | Poecilia velifera | endemic | Sail-fin molly | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis baenschi | endemic | Golden livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis balsas | endemic | Balsas livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis catemaco | endemic | Catemaco livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis fasciata | endemic | San Jeronimo livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis gracilis | native | Porthole livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis hnilickai | endemic | Upper Grijalva livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis infans | endemic | Lerma livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis jackschultzi | native | ||
| Cyprinodontiformes | Poeciliidae | Poeciliopsis latidens | endemic | Lowland livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis lucida | endemic | Clearfin livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis lutzi | native | Oaxaca livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis monacha | native | Headwater livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis occidentalis | native | Gila topminnow | Spanish : Charalito |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis pleurospilus | native | Largespot livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis presidionis | endemic | Sinaloa livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis prolifica | endemic | Blackstripe livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis scarlli | endemic | Michoacan livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis sonoriensis | native | Sonora topminnow | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis turneri | endemic | Blackspotted livebearer | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis turrubarensis | native | Turrubarés toothcarp | |
| Cyprinodontiformes | Poeciliidae | Poeciliopsis viriosa | endemic | Chubby livebearer | |
| Centrarchiformes | Centrarchidae | Pomoxis annularis | introduced | White crappie | |
| Centrarchiformes | Centrarchidae | Pomoxis nigromaculatus | introduced | Black crappie | |
| Perciformes/Scorpaenoidei | Scorpaenidae | Pontinus rathbuni | native | Highfin scorpionfish | |
| Siluriformes | Ariidae | Potamarius nelsoni | native | Lacandon sea catfish | Spanish : Bagre lacadon |
| Siluriformes | Ariidae | Potamarius usumacintae | native | Usumacinta sea catfish | |
| Cyprinodontiformes | Poeciliidae | Priapella bonita | endemic | Graceful priapella | Spanish : Guayacon ojiazul |
| Cyprinodontiformes | Poeciliidae | Priapella chamulae | native | Sapphire toothcarp | |
| Cyprinodontiformes | Poeciliidae | Priapella compressa | endemic | Palenque priapella | |
| Cyprinodontiformes | Poeciliidae | Priapella intermedia | endemic | Isthmian priapella | |
| Cyprinodontiformes | Poeciliidae | Priapella lacandonae | native | Mizola toothcarp | |
| Cyprinodontiformes | Poeciliidae | Priapella olmecae | endemic | Olmec priapella | |
| Siluriformes | Ictaluridae | Prietella lundbergi | endemic | Phantom blindcat | |
| Siluriformes | Ictaluridae | Prietella phreatophila | endemic | Mexican blindcat | Spanish : Bagre de Muzquiz |
| Rhinopristiformes | Pristidae | Pristis pectinata | native | Smalltooth sawfish | |
| Cyprinodontiformes | Profundulidae | Profundulus mixtlanensis | native | ||
| Cyprinodontiformes | Profundulidae | Profundulus oaxacae | native | ||
| Cyprinodontiformes | Profundulidae | Profundulus parentiae | native | Parenti's killifish | |
| Cyprinodontiformes | Profundulidae | Profundulus punctatus | native | Oaxaca killifish | |
| Characiformes | Acestrorhamphidae | Psalidodon fasciatus | native | Banded astyanax | |
| Syngnathiformes | Syngnathidae | Pseudophallus starksii | native | ||
| Cyprinodontiformes | Poeciliidae | Pseudoxiphophorus bimaculatus | native | Twospot livebearer | |
| Cyprinodontiformes | Poeciliidae | Pseudoxiphophorus jonesii | endemic | Barred killifish | |
| Siluriformes | Loricariidae | Pterygoplichthys disjunctivus | introduced | Vermiculated sailfin catfish | |
| Cypriniformes | Leuciscidae | Ptychocheilus lucius | native | Colorado pikeminnow | |
| Cypriniformes | Cyprinidae | Puntius titteya | introduced | Cherry barb | |
| Siluriformes | Ictaluridae | Pylodictis olivaris | native | Flathead catfish | Spanish : Pintontle |
| Siluriformes | Heptapteridae | Rhamdia guatemalensis | native | Pale catfish | |
| Siluriformes | Heptapteridae | Rhamdia laluchensis | native | La Lucha blind catfish | |
| Siluriformes | Heptapteridae | Rhamdia laticauda | native | Filespine chulín | |
| Siluriformes | Heptapteridae | Rhamdia macuspanensis | endemic | Olmec blind catfish | |
| Siluriformes | Heptapteridae | Rhamdia parryi | native | Tonala catfish | |
| Siluriformes | Heptapteridae | Rhamdia quelen | native | South American catfish | |
| Siluriformes | Heptapteridae | Rhamdia reddelli | endemic | Blind whiskered catfish | Spanish : Juil ciego |
| Siluriformes | Heptapteridae | Rhamdia zongolicensis | native | Zongolica catfish | |
| Cichliformes | Cichlidae | Rheoheros coeruleus | endemic | ||
| Cichliformes | Cichlidae | Rheoheros lentiginosus | native | Freckled cichlid | |
| Cypriniformes | Leuciscidae | Rhinichthys cataractae | native | Longnose dace | |
| Cypriniformes | Leuciscidae | Rhinichthys cobitis | native | Loach minnow | |
| Cypriniformes | Leuciscidae | Rhinichthys osculus | native | Speckled dace | |
| Eupercaria/misc | Haemulidae | Rhonciscus bayanus | native | Purplemouth grunt | Spanish : Ronco blanquillo |
| Cichliformes | Cichlidae | Rocio gemmata | endemic | ||
| Cichliformes | Cichlidae | Rocio ocotal | endemic | ||
| Cichliformes | Cichlidae | Rocio octofasciata | native | Jack Dempsey | Spanish : Riquiraqui |
| Characiformes | Characidae | Roeboides bouchellei | native | Crystal tetra | |
| Salmoniformes | Salmonidae | Salvelinus fontinalis | introduced | Brook trout | Spanish : Trucha de arroyo |
| Gobiiformes | Gobiidae | Sicydium fayae | native | ||
| Gobiiformes | Gobiidae | Sicydium gymnogaster | native | Smoothbelly goby | |
| Gobiiformes | Gobiidae | Sicydium multipunctatum | native | Multispotted goby | |
| Cyprinodontiformes | Goodeidae | Skiffia bilineata | endemic | Twoline skiffia | |
| Cyprinodontiformes | Goodeidae | Skiffia francesae | endemic | Golden skiffia | Spanish : Tiro |
| Cyprinodontiformes | Goodeidae | Skiffia lermae | endemic | Olive skiffia | |
| Cyprinodontiformes | Goodeidae | Skiffia multipunctata | endemic | Spotted skiffia | |
| Beloniformes | Belonidae | Strongylura exilis | native | Californian needlefish | Spanish : Agujón bravo de California |
| Beloniformes | Belonidae | Strongylura hubbsi | native | Maya needlefish | |
| Beloniformes | Belonidae | Strongylura marina | native | Atlantic needlefish | |
| Cypriniformes | Leuciscidae | Stypodon signifer | endemic | Stumptooth minnow | |
| Synbranchiformes | Synbranchidae | Synbranchus marmoratus | native | Marbled swamp eel | |
| Cypriniformes | Cyprinidae | Systomus pleurotaenia | introduced | Black lined barb | |
| Cypriniformes | Leuciscidae | Tampichthys catostomops | native | Pánuco minnow | |
| Cypriniformes | Leuciscidae | Tampichthys dichroma | endemic | Bicolor minnow | Spanish : Sardinita de Rio Verde |
| Cypriniformes | Leuciscidae | Tampichthys erimyzonops | native | Chubsucker minnow | |
| Cypriniformes | Leuciscidae | Tampichthys ipni | endemic | Lantern minnow | |
| Cypriniformes | Leuciscidae | Tampichthys mandibularis | endemic | Flatjaw minnow | Spanish : Sardinita quijarrona |
| Cypriniformes | Leuciscidae | Tampichthys rasconis | native | Blackstripe minnow | |
| Petromyzontiformes | Petromyzontidae | Tetrapleurodon geminis | endemic | Mexican brook lamprey | |
| Petromyzontiformes | Petromyzontidae | Tetrapleurodon spadiceus | endemic | Mexican lamprey | |
| Cichliformes | Cichlidae | Theraps irregularis | native | Arroyo cichlid | |
| Cichliformes | Cichlidae | Thorichthys callolepis | endemic | San Domingo cichlid | |
| Cichliformes | Cichlidae | Thorichthys helleri | endemic | Yellow cichlid | |
| Cichliformes | Cichlidae | Thorichthys maculipinnis | endemic | ||
| Cichliformes | Cichlidae | Thorichthys meeki | native | Firemouth cichlid | Spanish : Castarrica |
| Cichliformes | Cichlidae | Thorichthys panchovillai | native | ||
| Cichliformes | Cichlidae | Thorichthys pasionis | native | Blackgullet cichlid | |
| Cichliformes | Cichlidae | Thorichthys socolofi | endemic | Chiapas cichlid | |
| Cyprinodontiformes | Profundulidae | Tlaloc candalarius | native | Headwater killifish | |
| Cyprinodontiformes | Profundulidae | Tlaloc hildebrandi | endemic | Chiapas killifish | |
| Cyprinodontiformes | Profundulidae | Tlaloc labialis | native | Largelip killifish | |
| Cichliformes | Cichlidae | Trichromis salvini | native | Yellow belly cichlid | Spanish : Pico de gallo |
| Ophidiiformes | Dinematichthyidae | Typhliasina pearsei | endemic | Mexican blind brotula | Spanish : Dama Ciega Blanca |
| Cichliformes | Cichlidae | Vieja bifasciata | native | Twoband cichlid | Spanish : Colorada |
| Cichliformes | Cichlidae | Vieja breidohri | endemic | Angostura cichlid | |
| Cichliformes | Cichlidae | Vieja fenestrata | endemic | Spanish : Mojarra negra | |
| Cichliformes | Cichlidae | Vieja hartwegi | endemic | Tailbar cichlid | |
| Cichliformes | Cichlidae | Vieja melanurus | native | Redhead cichlid | |
| Cichliformes | Cichlidae | Vieja zonata | endemic | Oaxaca cichlid | Spanish : Mojarra prieta |
| Cichliformes | Cichlidae | Wajpamheros nourissati | native | Bluemouth cichlid | Spanish : Panza negra |
| Cyprinodontiformes | Goodeidae | Xenoophorus captivus | endemic | Relict splitfin | Spanish : Solo Goodeido |
| Cyprinodontiformes | Goodeidae | Xenotaenia resolanae | endemic | Leopard splitfin | |
| Cyprinodontiformes | Goodeidae | Xenotoca doadrioi | native | ||
| Cyprinodontiformes | Goodeidae | Xenotoca eiseni | endemic | Redtail splitfin | |
| Cyprinodontiformes | Goodeidae | Xenotoca lyonsi | native | ||
| Cyprinodontiformes | Goodeidae | Xenotoca melanosoma | endemic | Black splitfin | |
| Cyprinodontiformes | Goodeidae | Xenotoca variata | endemic | Jeweled splitfin | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus alvarezi | native | Chiapas swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus andersi | endemic | Spiketail platyfish | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus birchmanni | endemic | Sheepshead swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus clemenciae | endemic | Yellow swordtail | Spanish : Espada de Clemencia |
| Cyprinodontiformes | Poeciliidae | Xiphophorus continens | endemic | Short-sword platyfish | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus cortezi | endemic | Delicate swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus couchianus | endemic | Monterrey platyfish | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus evelynae | endemic | Puebla platyfish | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus gordoni | endemic | Northern platyfish | Spanish : Platy Cuatro Cienegas |
| Cyprinodontiformes | Poeciliidae | Xiphophorus hellerii | native | Green swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus kallmani | native | ||
| Cyprinodontiformes | Poeciliidae | Xiphophorus kosszanderi | native | Chapultepec platy | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus maculatus | native | Southern platyfish | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus malinche | endemic | Highland swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus meyeri | native | Marbled swordtail | Spanish : Platy de Muzquiz |
| Cyprinodontiformes | Poeciliidae | Xiphophorus milleri | endemic | Catemaco platyfish | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus mixei | native | Mixe swordtail | English : Mixed swordtail |
| Cyprinodontiformes | Poeciliidae | Xiphophorus montezumae | endemic | Montezuma swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus monticolus | native | Southern mountain swordtail | English : Southern mountain swordtail |
| Cyprinodontiformes | Poeciliidae | Xiphophorus multilineatus | endemic | Striped swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus nezahualcoyotl | endemic | Mountain swordatail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus nigrensis | endemic | Panuco swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus pygmaeus | endemic | Pygmy swordtail | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus roseni | native | ||
| Cyprinodontiformes | Poeciliidae | Xiphophorus variatus | native | Variable platyfish | |
| Cyprinodontiformes | Poeciliidae | Xiphophorus xiphidium | endemic | Swordtail platyfish | |
| Cypriniformes | Leuciscidae | Yuriria alta | endemic | Jalisco chub | |
| Cypriniformes | Leuciscidae | Yuriria amatlana | native | Amatlan chub | |
| Cypriniformes | Leuciscidae | Yuriria chapalae | native | Chapala chub | |
| Cyprinodontiformes | Goodeidae | Zoogoneticus purhepechus | native | ||
| Cyprinodontiformes | Goodeidae | Zoogoneticus quitzeoensis | endemic | Picotee goodeid | |
| Cyprinodontiformes | Goodeidae | Zoogoneticus tequila | native | Tequila splitfin |