n = 94
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Hemigrammus aereus | Géry, 1959 | Hemigrammus aereus | Characidae | |
| Hemigrammus aguaruna | Lima, Correa & Ota, 2016 | Genus Species | New species | |
| Hemigrammus amacayacu | Albornoz‐Garzón, Méndez‐López, DoNascimiento & Lima, 2019 | Genus Species | New species | |
| Hemigrammus amandae | (Géry & Uj, 1987) | Hyphessobrycon amandae | Characidae | Ember tetra |
| Hemigrammus analis | Durbin, 1909 | Hemigrammus analis | Characidae | |
| Hemigrammus anisitsi | Eigenmann, 1907 | Psalidodon anisitsi | Characidae | Buenos Aires tetra |
| Hemigrammus armstrongi | Schultz & Axelrod, 1955 | Hemigrammus rodwayi | Characidae | |
| Hemigrammus arua | Lima, Wosiacki & Ramos, 2009 | Hemigrammus arua | Characidae | |
| Hemigrammus ataktos | Marinho, Dagosta & Birindelli, 2014 | Hemigrammus ataktos | Characidae | |
| Hemigrammus barrigonae | Eigenmann & Henn, 1914 | Hemigrammus barrigonae | Characidae | |
| Hemigrammus bellotti | (Steindachner, 1882) | Hemigrammus bellottii | Characidae | |
| Hemigrammus bellottii | (Steindachner, 1882) | Hemigrammus bellottii | Characidae | |
| Hemigrammus belottii | (Steindachner, 1882) | Hemigrammus bellottii | Characidae | |
| Hemigrammus bleheri | Géry & Mahnert, 1986 | Petitella bleheri | Characidae | Firehead tetra |
| Hemigrammus boesemani | Géry, 1959 | Hemigrammus boesemani | Characidae | |
| Hemigrammus boulengeri | Eigenmann, 1907 | Hyphessobrycon boulengeri | Characidae | |
| Hemigrammus brevis | Ellis, 1911 | Hemigrammus brevis | Characidae | |
| Hemigrammus caudovittatus | Ahl, 1923 | Psalidodon anisitsi | Characidae | Buenos Aires tetra |
| Hemigrammus changae | Ota, Lima & Hidalgo, 2019 | Hemigrammus changae | Characidae | |
| Hemigrammus coeruleus | Durbin, 1908 | Hemigrammus coeruleus | Characidae | |
| Hemigrammus compressus | Meek, 1904 | Hyphessobrycon compressus | Characidae | Mayan tetra |
| Hemigrammus cupreus | Durbin, 1918 | Hemigrammus cupreus | Characidae | |
| Hemigrammus cylindricus | Durbin, 1909 | Hemigrammus cylindricus | Characidae | |
| Hemigrammus diagonicus | Mendonça & Wosiacki, 2011 | Hemigrammus diagonicus | Characidae | |
| Hemigrammus durbinae | Ota, Lima & Pavanelli, 2015 | Hemigrammus durbinae | Characidae | |
| Hemigrammus elegans | (Steindachner, 1882) | Hemigrammus elegans | Characidae | |
| Hemigrammus erythrostigma | Fowler, 1943 | Hyphessobrycon erythrostigma | Characidae | Bleeding-heart tetra |
| Hemigrammus erythrozonus | Durbin, 1909 | Hemigrammus erythrozonus | Characidae | Glowlight tetra |
| Hemigrammus falsus | Meinken, 1958 | Hemigrammus falsus | Characidae | Head-and-tail-light fish |
| Hemigrammus filamentosus | Zarske, 2011 | Hemigrammus filamentosus | Characidae | |
| Hemigrammus geisleri | Zarske & Géry, 2007 | Hemigrammus geisleri | Characidae | |
| Hemigrammus georgettae | (Géry, 1961) | Hyphessobrycon georgettae | Characidae | |
| Hemigrammus gracilis | (Lütken, 1875) | Hemigrammus gracilis | Characidae | |
| Hemigrammus guyanensis | Géry, 1959 | Hemigrammus guyanensis | Characidae | |
| Hemigrammus haraldi | Géry, 1961 | Hemigrammus haraldi | Characidae | |
| Hemigrammus haraldschultzi | (Travassos, 1960) | Hyphessobrycon haraldschultzi | Characidae | |
| Hemigrammus hyanuary | Durbin, 1918 | Hemigrammus hyanuary | Characidae | January tetra |
| Hemigrammus inconstans | Eigenmann & Ogle, 1907 | Hyphessobrycon inconstans | Characidae | |
| Hemigrammus iota | Durbin, 1909 | Hemigrammus iota | Characidae | |
| Hemigrammus kennedyi | Eigenmann, 1903 | Psellogrammus kennedyi | Characidae | |
| Hemigrammus kuroobi | Reia & Benine, 2019 | Genus Species | New species | |
| Hemigrammus levis | Durbin, 1908 | Hemigrammus levis | Characidae | |
| Hemigrammus luelingi | Géry, 1964 | Hemigrammus luelingi | Characidae | |
| Hemigrammus lunatus | Durbin, 1918 | Hemigrammus lunatus | Characidae | |
| Hemigrammus machadoi | Ota, Lima & Pavanelli, 2014 | Hemigrammus machadoi | Characidae | |
| Hemigrammus mahnerti | Uj & Géry, 1989 | Hemigrammus mahnerti | Characidae | |
| Hemigrammus marginatus | Ellis, 1911 | Hemigrammus marginatus | Characidae | |
| Hemigrammus matei | Eigenmann, 1918 | Hemigrammus matei | Characidae | |
| Hemigrammus mattei | Eigenmann, 1918 | Hemigrammus matei | Characidae | |
| Hemigrammus maxillaris | (Fowler, 1932) | Hemigrammus lunatus | Characidae | |
| Hemigrammus megaceps | Fowler, 1945 | Hemigrammus megaceps | Characidae | |
| Hemigrammus melanochrous | Fowler, 1913 | Hemigrammus melanochrous | Characidae | |
| Hemigrammus melasopterus | Eigenmann & Kennedy, 1903 | Hyphessobrycon eques | Characidae | Jewel tetra |
| Hemigrammus micropterus | Meek, 1907 | Hemigrammus micropterus | Characidae | |
| Hemigrammus micropterus boesemani | Géry, 1959 | Hemigrammus boesemani | Characidae | |
| Hemigrammus microstomus | Durbin, 1918 | Hemigrammus microstomus | Characidae | |
| Hemigrammus mimus | Böhlke, 1955 | Hemigrammus mimus | Characidae | |
| Hemigrammus minimus | (Durbin, 1909) | Hyphessobrycon minimus | Characidae | |
| Hemigrammus minutus | Meek & Hildebrand, 1912 | Hyphessobrycon panamensis | Characidae | |
| Hemigrammus nanus | (Lütken, 1875) | Hasemania nana | Characidae | Silvertip tetra |
| Hemigrammus neptunus | Zarske & Géry, 2002 | Hemigrammus neptunus | Characidae | |
| Hemigrammus newboldi | (Fernández-Yépez, 1949) | Hemigrammus newboldi | Characidae | |
| Hemigrammus ocellifer | (Steindachner, 1882) | Hemigrammus ocellifer | Characidae | Head-and-taillight tetra |
| Hemigrammus ocellifer falsus | Meinken, 1958 | Hemigrammus falsus | Characidae | Head-and-tail-light fish |
| Hemigrammus ora | Zarske, Le Bail & Géry, 2006 | Hemigrammus ora | Characidae | |
| Hemigrammus orthus | Durbin, 1909 | Hemigrammus orthus | Characidae | |
| Hemigrammus paipayensis | Pearson, 1929 | Bryconacidnus paipayensis | Characidae | |
| Hemigrammus parana | Marinho, Carvalho, Langeani & Tatsumi, 2008 | Hemigrammus parana | Characidae | |
| Hemigrammus pretoensis | Géry, 1965 | Hemigrammus pretoensis | Characidae | |
| Hemigrammus proneki | Géry, 1963 | Hemigrammus schmardae | Characidae | |
| Hemigrammus pulcher | Ladiges, 1938 | Hemigrammus pulcher | Characidae | Garnet tetra |
| Hemigrammus pulcher haraldi | Géry, 1961 | Hemigrammus haraldi | Characidae | |
| Hemigrammus rhodostomus | Ahl, 1924 | Petitella rhodostoma | Characidae | Rummy-nose tetra |
| Hemigrammus robustulus | Cope, 1870 | Hyphessobrycon robustulus | Characidae | |
| Hemigrammus rodwayi | Durbin, 1909 | Hemigrammus rodwayi | Characidae | |
| Hemigrammus rubrostriatus | Zarske, 2015 | Hemigrammus rubrostriatus | Characidae | |
| Hemigrammus santae | Eigenmann, 1907 | Hyphessobrycon santae | Characidae | |
| Hemigrammus schmardae | (Steindachner, 1882) | Hemigrammus schmardae | Characidae | |
| Hemigrammus serpae | (Durbin, 1908) | Hyphessobrycon eques | Characidae | Jewel tetra |
| Hemigrammus silimoni | Britski & Lima, 2008 | Hemigrammus silimoni | Characidae | |
| Hemigrammus skolioplatus | Bertaco & Carvalho, 2005 | Hemigrammus skolioplatus | Characidae | |
| Hemigrammus stegemanni | (Géry, 1961) | Hyphessobrycon stegemanni | Characidae | Savanna tetra |
| Hemigrammus stictus | (Durbin, 1909) | Hemigrammus stictus | Characidae | |
| Hemigrammus taphorni | Benine & Lopes, 2007 | Hemigrammus taphorni | Characidae | |
| Hemigrammus tocantinsi | Carvalho, Bertaco & Jerep, 2010 | Hemigrammus tocantinsi | Characidae | |
| Hemigrammus tridens | Eigenmann, 1907 | Hemigrammus tridens | Characidae | |
| Hemigrammus tropis | (Géry, 1963) | Hyphessobrycon tropis | Characidae | |
| Hemigrammus tukunai | (Géry, 1963) | Hyphessobrycon tukunai | Characidae | |
| Hemigrammus ulreyi | (Boulenger, 1895) | Hemigrammus ulreyi | Characidae | |
| Hemigrammus unilineatus | (Gill, 1858) | Hemigrammus unilineatus | Characidae | Featherfin tetra |
| Hemigrammus unilineatus cayennensis | Géry, 1959 | Hemigrammus unilineatus | Characidae | Featherfin tetra |
| Hemigrammus vorderwinkleri | Géry, 1963 | Hemigrammus vorderwinkleri | Characidae | |
| Hemigrammus xaveriellus | Lima, Urbano-Bonilla & Prada-Pedreros, 2020 | Genus Species | New species | |
| Hemigrammus yinyang | Lima & Sousa, 2009 | Hemigrammus yinyang | Characidae |