n = 61
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Austrolebias accorsii | Nielsen & Pillet, 2015 | Austrolebias accorsii | Rivulidae | |
| Austrolebias adloffi | (Ahl, 1922) | Austrolebias adloffi | Rivulidae | |
| Austrolebias affinis | (Amato, 1986) | Austrolebias affinis | Rivulidae | |
| Austrolebias alexandri | (Castello & López, 1974) | Austrolebias alexandri | Rivulidae | |
| Austrolebias apaii | Costa, Laurino, Recuero & Salvia, 2006 | Austrolebias bellottii | Rivulidae | Argentine pearlfish |
| Austrolebias arachan | Loureiro, Azpelicueta & García, 2004 | Austrolebias arachan | Rivulidae | |
| Austrolebias araucarianus | Costa, 2014 | Austrolebias araucarianus | Rivulidae | |
| Austrolebias bagual | Volcan, Lanés & Gonçalves, 2014 | Austrolebias bagual | Rivulidae | |
| Austrolebias bellottii | (Steindachner, 1881) | Austrolebias bellottii | Rivulidae | Argentine pearlfish |
| Austrolebias botocudo | Lanés, Volcan & Maltchik, 2021 | Austrolebias botocudo | Rivulidae | |
| Austrolebias camaquensis | Volcan, Gonçalves & Lanés, 2017 | Austrolebias camaquensis | Rivulidae | |
| Austrolebias carvalhoi | (Myers, 1947) | Austrolebias carvalhoi | Rivulidae | |
| Austrolebias charrua | Costa & Cheffe, 2001 | Austrolebias charrua | Rivulidae | |
| Austrolebias cheffei | Volcan, Barbosa, Robe & Lanés, 2021 | Austrolebias cheffei | Rivulidae | |
| Austrolebias cheradophilus | (Vaz-Ferreira, Sierra de Soriano & Scaglia de Paulete, 1965) | Austrolebias cheradophilus | Rivulidae | |
| Austrolebias cinereus | (Amato, 1986) | Austrolebias cinereus | Rivulidae | |
| Austrolebias cyaneus | (Amato, 1987) | Austrolebias cyaneus | Rivulidae | |
| Austrolebias duraznensis | (García, Scvortzoff & Hernández, 1995) | Austrolebias duraznensis | Rivulidae | |
| Austrolebias elongatus | (Steindachner, 1881) | Austrolebias elongatus | Rivulidae | |
| Austrolebias ephemerus | Volcan & Severo-Neto, 2019 | Austrolebias ephemerus | Rivulidae | |
| Austrolebias guarani | (Alonso, Calviño, Terán, Serra, Montes, García, Barneche, Almirón et al., 2023) | Austrolebias guarani | Rivulidae | |
| Austrolebias gymnoventris | (Amato, 1986) | Austrolebias gymnoventris | Rivulidae | |
| Austrolebias ibicuiensis | (Costa, 1999) | Austrolebias ibicuiensis | Rivulidae | |
| Austrolebias jaegari | Costa & Cheffe, 2002 | Austrolebias jaegari | Rivulidae | |
| Austrolebias jaegeri | Costa & Cheffe, 2002 | Austrolebias jaegari | Rivulidae | |
| Austrolebias juanlangi | Costa, Cheffe, Salvia & Litz, 2006 | Austrolebias juanlangi | Rivulidae | |
| Austrolebias limnaeus | (Schultz, 1949) | Austrofundulus limnaeus | Rivulidae | |
| Austrolebias litzi | Costa, 2006 | Austrolebias litzi | Rivulidae | |
| Austrolebias lourenciano | Volcan, Barbosa, Robe & Lanés, 2021 | Austrolebias lourenciano | Rivulidae | |
| Austrolebias luteoflammulatus | (Vaz-Ferreira, Sierra de Soriano & Scaglia de Paulete, 1965) | Austrolebias luteoflammulatus | Rivulidae | |
| Austrolebias luzardoi | Perujo, Calviño, Salvia & Prieto, 2005 | Austrolebias periodicus | Rivulidae | |
| Austrolebias melanoorus | (Amato, 1986) | Austrolebias melanoorus | Rivulidae | |
| Austrolebias minuano | Costa & Cheffe, 2001 | Austrolebias minuano | Rivulidae | |
| Austrolebias monstrosus | (Huber, 1995) | Austrolebias monstrosus | Rivulidae | |
| Austrolebias nachtigalli | Costa & Cheffe, 2006 | Austrolebias nachtigalli | Rivulidae | |
| Austrolebias nigripinnis | (Regan, 1912) | Austrolebias nigripinnis | Rivulidae | Blackfin pearlfish |
| Austrolebias nigrofasciatus | Costa & Cheffe, 2001 | Austrolebias nigrofasciatus | Rivulidae | |
| Austrolebias nioni | (Berkenkamp, Reichert & Prieto, 1997) | Austrolebias nioni | Rivulidae | |
| Austrolebias nonoiuliensis | (Taberner, Fernández-Santos & Castelli, 1974) | Austrolebias nonoiuliensis | Rivulidae | |
| Austrolebias nubium | Lanés, Volcan & Maltchik, 2021 | Austrolebias nubium | Rivulidae | |
| Austrolebias paranaensis | Costa, 2006 | Austrolebias paranaensis | Rivulidae | |
| Austrolebias patriciae | (Huber, 1995) | Austrolebias patriciae | Rivulidae | |
| Austrolebias paucisquama | Ferrer dos Santos, Malabarba & Costa, 2008 | Austrolebias paucisquama | Rivulidae | |
| Austrolebias pelotapes | Costa & Cheffe, 2017 | Austrolebias pelotapes | Rivulidae | |
| Austrolebias periodicus | (Costa, 1999) | Austrolebias periodicus | Rivulidae | |
| Austrolebias pongondo | Costa & Cheffe, 2017 | Austrolebias pongondo | Rivulidae | |
| Austrolebias prognathus | (Amato, 1986) | Austrolebias prognathus | Rivulidae | |
| Austrolebias queguay | Serra & Loureiro, 2018 | Austrolebias queguay | Rivulidae | |
| Austrolebias quirogai | Loureiro, Duarte & Zarucki, 2011 | Austrolebias quirogai | Rivulidae | |
| Austrolebias reicherti | (Loureiro & García, 2004) | Austrolebias reicherti | Rivulidae | |
| Austrolebias robustus | (Günther, 1883) | Austrolebias robustus | Rivulidae | |
| Austrolebias salviai | Costa, Litz & Laurino, 2006 | Austrolebias reicherti | Rivulidae | |
| Austrolebias toba | Calviño, 2006 | Austrolebias toba | Rivulidae | |
| Austrolebias univentripinnis | Costa & Cheffe, 2005 | Austrolebias univentripinnis | Rivulidae | |
| Austrolebias vandenbergi | (Huber, 1995) | Austrolebias vandenbergorum | Rivulidae | |
| Austrolebias vandenbergorum | (Huber, 1995) | Austrolebias vandenbergorum | Rivulidae | |
| Austrolebias varzeae | Costa, Reis & Behr, 2004 | Austrolebias varzeae | Rivulidae | |
| Austrolebias vazferreirai | (Berkenkamp, Etzel, Reichert & Salvia, 1994) | Austrolebias vazferreirai | Rivulidae | |
| Austrolebias viarius | (Vaz-Ferreira, Sierra de Soriano & Scaglia de Paulete, 1965) | Austrolebias viarius | Rivulidae | |
| Austrolebias wichi | Alonso, Teran, Calviño, Garcia, Cardoso & Garcia, 2018 | Austrolebias wichi | Rivulidae | |
| Austrolebias wolterstorffi | (Ahl, 1924) | Austrolebias wolterstorffi | Rivulidae |