n = 197
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Rivulus agilae | Hoedeman, 1954 | Laimosemion agilae | Rivulidae | |
| Rivulus albae | Valdesalici, García Gil & Bressane Nielsen, 2011 | Melanorivulus schuncki | Rivulidae | |
| Rivulus altivelis | Huber, 1992 | Laimosemion altivelis | Rivulidae | |
| Rivulus amanan | Costa & Lazzarotto, 2008 | Anablepsoides amanan | Rivulidae | |
| Rivulus amanapira | Costa, 2004 | Laimosemion amanapira | Rivulidae | |
| Rivulus amphoreus | Huber, 1979 | Anablepsoides amphoreus | Rivulidae | |
| Rivulus apiamici | Costa, 1989 | Melanorivulus apiamici | Rivulidae | |
| Rivulus atratus | Garman, 1895 | Anablepsoides atratus | Rivulidae | |
| Rivulus auratus | Schreitmüller, 1919 | Anablepsoides urophthalmus | Rivulidae | |
| Rivulus azurescens | Vermeulen, 2013 | Rivulus azurescens | Rivulidae | |
| Rivulus bahianus | Huber, 1990 | Anablepsoides bahianus | Rivulidae | |
| Rivulus beniensis | Myers, 1927 | Anablepsoides beniensis | Rivulidae | |
| Rivulus beniensis beniensis | Myers, 1927 | Anablepsoides beniensis | Rivulidae | |
| Rivulus beniensis lacustris | Myers, 1927 | Anablepsoides beniensis | Rivulidae | |
| Rivulus berovidesi | Silva, 2015 | Rivulus berovidesi | Rivulidae | |
| Rivulus birkhahni | Berkenkamp & Etzel, 1992 | Cynodonichthys birkhahni | Rivulidae | |
| Rivulus birkhani | Berkenkamp & Etzel, 1992 | Cynodonichthys birkhahni | Rivulidae | |
| Rivulus boehlkei | Huber & Fels, 1985 | Cynodonichthys boehlkei | Rivulidae | |
| Rivulus bolivianus | Seegers, 1988 | Anablepsoides beniensis | Rivulidae | |
| Rivulus bonairensis | Hoedeman, 1958 | Kryptolebias marmoratus | Rivulidae | Mangrove rivulus |
| Rivulus bondi | Schultz, 1949 | Anablepsoides bondi | Rivulidae | |
| Rivulus bororo | Costa, 2008 | Melanorivulus bororo | Rivulidae | |
| Rivulus brasiliensis | (Valenciennes, 1821) | Kryptolebias brasiliensis | Rivulidae | |
| Rivulus breviceps | Eigenmann, 1909 | Laimosemion breviceps | Rivulidae | |
| Rivulus brevis | Regan, 1912 | Rachovia brevis | Rivulidae | |
| Rivulus brunneus | Meek & Hildebrand, 1913 | Cynodonichthys brunneus | Rivulidae | |
| Rivulus cajariensis | Costa & De Luca, 2011 | Anablepsoides cajariensis | Rivulidae | |
| Rivulus campelloi | Costa, 1990 | Kryptolebias campelloi | Rivulidae | |
| Rivulus carolinae | Vermeulen & Mejia-Vargas, 2020 | Rivulus carolinae | Rivulidae | |
| Rivulus caudomarginatus | Seegers, 1984 | Kryptolebias caudomarginatus | Rivulidae | |
| Rivulus caurae | Radda, 2004 | Anablepsoides caurae | Rivulidae | |
| Rivulus cearensis | Costa & Vono, 2009 | Anablepsoides cearensis | Rivulidae | |
| Rivulus christinae | Huber, 1992 | Anablepsoides christinae | Rivulidae | |
| Rivulus chucunaque | Breder, 1925 | Cynodonichthys chucunaque | Rivulidae | |
| Rivulus chucunaque chucunaque | Breder, 1925 | Cynodonichthys chucunaque | Rivulidae | |
| Rivulus chucunaque sucubti | Breder, 1925 | Cynodonichthys sucubti | Rivulidae | |
| Rivulus cladophorus | Huber, 1991 | Laimosemion cladophorus | Rivulidae | |
| Rivulus collieri | (Huber, 2021) | Genus Species | New species | |
| Rivulus compactus | Myers, 1927 | Pituna compacta | Rivulidae | |
| Rivulus compressus | Henn, 1916 | Anablepsoides micropus | Rivulidae | |
| Rivulus corpulentus | Thomerson & Taphorn, 1993 | Laimosemion corpulentus | Rivulidae | |
| Rivulus crixas | Costa, 2007 | Melanorivulus crixas | Rivulidae | |
| Rivulus cryptocallus | Seegers, 1980 | Anablepsoides cryptocallus | Rivulidae | |
| Rivulus cryptocalus | Seegers, 1980 | Anablepsoides cryptocallus | Rivulidae | |
| Rivulus cyanopterus | Costa, 2005 | Melanorivulus cyanopterus | Rivulidae | |
| Rivulus cylindraceus | Poey, 1860 | Rivulus cylindraceus | Rivulidae | Green rivulus |
| Rivulus dapazi | Costa, 2005 | Melanorivulus dapazi | Rivulidae | |
| Rivulus decoratus | Costa, 1989 | Melanorivulus decoratus | Rivulidae | |
| Rivulus degreefi | Collier, 2016 | Genus Species | New species | |
| Rivulus deltaphilus | Seegers, 1983 | Anablepsoides deltaphilus | Rivulidae | |
| Rivulus depressus | Costa, 1991 | Atlantirivulus depressus | Rivulidae | |
| Rivulus derhami | Fels & Huber, 1985 | Anablepsoides derhami | Rivulidae | |
| Rivulus dibaphus | Myers, 1927 | Laimosemion dibaphus | Rivulidae | |
| Rivulus dorni | Myers, 1924 | Kryptolebias brasiliensis | Rivulidae | |
| Rivulus duckensis | Hrbek, de Deus & Farias, 2004 | Laimosemion kirovskyi | Rivulidae | |
| Rivulus egens | Costa, 2005 | Melanorivulus egens | Rivulidae | |
| Rivulus elegans | Steindachner, 1880 | Cynodonichthys elegans | Rivulidae | |
| Rivulus elegans santensis | Köhler, 1906 | Atlantirivulus santensis | Rivulidae | |
| Rivulus elongatus | Fels & de Rham, 1981 | Anablepsoides elongatus | Rivulidae | |
| Rivulus erberi | Berkenkamp, 1989 | Anablepsoides erberi | Rivulidae | |
| Rivulus faucireticulatus | Costa, 2008 | Melanorivulus faucireticulatus | Rivulidae | |
| Rivulus flabellicauda | Regan, 1907 | Cynodonichthys isthmensis | Rivulidae | |
| Rivulus flammaecauda | Vermeulen & Mejia-Vargas, 2020 | Rivulus flammaecauda | Rivulidae | |
| Rivulus foliiscola | Vermeulen & Mejia-Vargas, 2020 | Genus Species | New species | |
| Rivulus formosensis | Costa, 2008 | Rivulus formosensis | Rivulidae | |
| Rivulus frenatus | Eigenmann, 1912 | Laimosemion frenatus | Rivulidae | |
| Rivulus frommi | Berkenkamp & Etzel, 1993 | Cynodonichthys frommi | Rivulidae | |
| Rivulus fuscolineatus | Bussing, 1980 | Cynodonichthys fuscolineatus | Rivulidae | |
| Rivulus garciae | de la Cruz & Dubitsky, 1976 | Kryptolebias marmoratus | Rivulidae | Mangrove rivulus |
| Rivulus garciai | de la Cruz & Dubitsky, 1976 | Kryptolebias marmoratus | Rivulidae | Mangrove rivulus |
| Rivulus gaucheri | Keith, Nandrin & Le Bail, 2006 | Anablepsoides gaucheri | Rivulidae | |
| Rivulus geayi | Vaillant, 1899 | Laimosemion geayi | Rivulidae | |
| Rivulus giarettai | Costa, 2008 | Melanorivulus giarettai | Rivulidae | |
| Rivulus glaucus | Bussing, 1980 | Cynodonichthys glaucus | Rivulidae | |
| Rivulus godmani | Regan, 1907 | Cynodonichthys godmani | Rivulidae | |
| Rivulus gransabanae | Lasso, Taphorn & Thomerson, 1992 | Laimosemion gransabanae | Rivulidae | |
| Rivulus haraldsiolii | Berkenkamp, 1984 | Atlantirivulus haraldsiolii | Rivulidae | |
| Rivulus harti | (Boulenger, 1890) | Anablepsoides hartii | Rivulidae | Hart's rivulus |
| Rivulus hartii | (Boulenger, 1890) | Anablepsoides hartii | Rivulidae | Hart's rivulus |
| Rivulus hendrichsi | Álvarez & Carranza, 1952 | Cynodonichthys hendrichsi | Rivulidae | |
| Rivulus heyei | Nichols, 1914 | Kryptolebias marmoratus | Rivulidae | Mangrove rivulus |
| Rivulus hildebrandi | Myers, 1927 | Cynodonichthys hildebrandi | Rivulidae | |
| Rivulus holmiae | Eigenmann, 1909 | Anablepsoides holmiae | Rivulidae | |
| Rivulus igneus | Huber, 1991 | Anablepsoides igneus | Rivulidae | |
| Rivulus illuminatus | Costa, 2007 | Melanorivulus illuminatus | Rivulidae | |
| Rivulus immaculatus | Thomerson, Nico & Taphorn, 1991 | Anablepsoides immaculatus | Rivulidae | |
| Rivulus insulaepinorum | de la Cruz & Dubitsky, 1976 | Rivulus insulaepinorum | Rivulidae | Isle of Pines rivulus |
| Rivulus intermittens | Fels & de Rham, 1981 | Anablepsoides intermittens | Rivulidae | |
| Rivulus iridescens | Fels & de Rham, 1981 | Anablepsoides iridescens | Rivulidae | |
| Rivulus isthmensis | Garman, 1895 | Cynodonichthys isthmensis | Rivulidae | |
| Rivulus isthmensis rubripunctatus | Bussing, 1980 | Cynodonichthys rubripunctatus | Rivulidae | |
| Rivulus jalapensis | Costa, 2010 | Melanorivulus jalapensis | Rivulidae | |
| Rivulus janeiroensis | Costa, 1991 | Atlantirivulus janeiroensis | Rivulidae | |
| Rivulus javahe | Costa, 2007 | Melanorivulus javahe | Rivulidae | |
| Rivulus jucundus | Huber, 1992 | Anablepsoides jucundus | Rivulidae | |
| Rivulus jurubatibensis | Costa, 2008 | Atlantirivulus jurubatibensis | Rivulidae | |
| Rivulus karaja | Costa, 2007 | Melanorivulus karaja | Rivulidae | |
| Rivulus kayabi | Costa, 2008 | Melanorivulus kayabi | Rivulidae | |
| Rivulus kayapo | Costa, 2006 | Melanorivulus kayapo | Rivulidae | |
| Rivulus kirovskyi | Costa, 2004 | Laimosemion kirovskyi | Rivulidae | |
| Rivulus kuelpmanni | Berkenkamp & Etzel, 1993 | Cynodonichthys kuelpmanni | Rivulidae | |
| Rivulus lanceolatus | Eigenmann, 1909 | Anablepsoides lanceolatus | Rivulidae | |
| Rivulus lazzarotoi | Costa, 2007 | Atlantirivulus lazzarotoi | Rivulidae | |
| Rivulus leucurus | Fowler, 1944 | Cynodonichthys leucurus | Rivulidae | |
| Rivulus limoncochae | Hoedeman, 1962 | Anablepsoides limoncochae | Rivulidae | |
| Rivulus litteratus | Costa, 2005 | Melanorivulus litteratus | Rivulidae | |
| Rivulus luelingi | Seegers, 1984 | Atlantirivulus luelingi | Rivulidae | |
| Rivulus lungi | Berkenkamp, 1984 | Anablepsoides lungi | Rivulidae | |
| Rivulus lyricauda | Thomerson, Berkenkamp & Taphorn, 1991 | Laimosemion lyricauda | Rivulidae | |
| Rivulus magdalenae | Eigenmann & Henn, 1916 | Cynodonichthys magdalenae | Rivulidae | Magdalena rivulus |
| Rivulus mahdiaensis | Suijker & Collier, 2006 | Laimosemion mahdiaensis | Rivulidae | |
| Rivulus manaensis | Hoedeman, 1961 | Laimosemion agilae | Rivulidae | |
| Rivulus marmoratus | Poey, 1880 | Kryptolebias marmoratus | Rivulidae | Mangrove rivulus |
| Rivulus marmoratus bonairensis | Hoedeman, 1958 | Kryptolebias marmoratus | Rivulidae | Mangrove rivulus |
| Rivulus mazaruni | Myers, 1924 | Anablepsoides mazaruni | Rivulidae | |
| Rivulus megaroni | Costa, 2010 | Melanorivulus megaroni | Rivulidae | |
| Rivulus mejiai | Vermeulen, 2020 | Genus Species | New species | |
| Rivulus micropus | (Steindachner, 1863) | Anablepsoides micropus | Rivulidae | |
| Rivulus milesi | Fowler, 1941 | Cynodonichthys magdalenae | Rivulidae | Magdalena rivulus |
| Rivulus modestus | Costa, 1991 | Melanorivulus modestus | Rivulidae | |
| Rivulus monikae | Berkenkamp & Etzel, 1995 | Cynodonichthys monikae | Rivulidae | |
| Rivulus monticola | Staeck & Schindler, 1997 | Anablepsoides monticola | Rivulidae | |
| Rivulus montium | Hildebrand, 1938 | Cynodonichthys montium | Rivulidae | |
| Rivulus myersi | Hubbs, 1936 | Cynodonichthys myersi | Rivulidae | |
| Rivulus nicoi | Thomerson & Taphorn, 1992 | Laimosemion nicoi | Rivulidae | |
| Rivulus nudiventris | Costa & Brasil, 1991 | Atlantirivulus nudiventris | Rivulidae | |
| Rivulus obscurus | Garman, 1895 | Anablepsoides ornatus | Rivulidae | |
| Rivulus ocellatus | Hensel, 1868 | Kryptolebias ocellatus | Rivulidae | |
| Rivulus ophiomimus | Huber, 1992 | Anablepsoides ophiomimus | Rivulidae | |
| Rivulus ornatus | Garman, 1895 | Anablepsoides ornatus | Rivulidae | |
| Rivulus pacificus | Huber, 1992 | Cynodonichthys pacificus | Rivulidae | |
| Rivulus paracatuensis | Costa, 2003 | Melanorivulus paracatuensis | Rivulidae | |
| Rivulus paresi | Costa, 2008 | Melanorivulus paresi | Rivulidae | |
| Rivulus parlettei | Valdesalici & Schindler, 2011 | Anablepsoides parlettei | Rivulidae | |
| Rivulus parnaibensis | Costa, 2003 | Melanorivulus parnaibensis | Rivulidae | |
| Rivulus peruanus | (Regan, 1903) | Anablepsoides peruanus | Rivulidae | |
| Rivulus pictus | Costa, 1989 | Melanorivulus pictus | Rivulidae | |
| Rivulus pinima | Costa, 1989 | Melanorivulus pinima | Rivulidae | |
| Rivulus pivijay | Vermeulen, 2013 | Rivulus pivijay | Rivulidae | |
| Rivulus planaltinus | Costa & Brasil, 2008 | Melanorivulus planaltinus | Rivulidae | |
| Rivulus poeyi | Steindachner, 1876 | Anablepsoides urophthalmus | Rivulidae | |
| Rivulus poranga | (Costa, 1989) | Pituna poranga | Rivulidae | |
| Rivulus punctatus | Boulenger, 1895 | Melanorivulus punctatus | Rivulidae | |
| Rivulus rachovii | Ahl, 1925 | Atlantirivulus santensis | Rivulidae | |
| Rivulus rectocaudatus | Fels & de Rham, 1981 | Laimosemion rectocaudatus | Rivulidae | |
| Rivulus ribesrubrum | Vermeulen, 2013 | Rivulus ribesrubrum | Rivulidae | |
| Rivulus riograndensis | Costa & Lanés, 2009 | Atlantirivulus riograndensis | Rivulidae | |
| Rivulus robustus | Miller & Hubbs, 1974 | Millerichthys robustus | Rivulidae | Mexican rivulus |
| Rivulus rogoaguae | Pearson & Myers, 1924 | Trigonectes rogoaguae | Rivulidae | |
| Rivulus roloffi | Roloff, 1938 | Rivulus roloffi | Rivulidae | Hispaniolan rivulus |
| Rivulus romeri | Costa, 2003 | Laimosemion romeri | Rivulidae | |
| Rivulus rondoni | Miranda Ribeiro, 1920 | Trigonectes balzanii | Rivulidae | |
| Rivulus rossoi | Costa, 2005 | Melanorivulus rossoi | Rivulidae | |
| Rivulus rubra | Kramp, 1914 | Anablepsoides urophthalmus | Rivulidae | |
| Rivulus rubripunctatus | Bussing, 1980 | Cynodonichthys rubripunctatus | Rivulidae | |
| Rivulus rubrolineatus | Fels & de Rham, 1981 | Anablepsoides rubrolineatus | Rivulidae | |
| Rivulus rubromarginatus | Costa, 2007 | Melanorivulus rubromarginatus | Rivulidae | |
| Rivulus rutilicaudus | Costa, 2005 | Melanorivulus rutilicaudus | Rivulidae | |
| Rivulus salmonicaudus | Costa, 2007 | Melanorivulus salmonicaudus | Rivulidae | |
| Rivulus santensis | Köhler, 1906 | Atlantirivulus santensis | Rivulidae | |
| Rivulus sape | Lasso-Alcalá, Taphorn, Lasso & León-Mata, 2006 | Laimosemion sape | Rivulidae | |
| Rivulus scalaris | Costa, 2005 | Melanorivulus scalaris | Rivulidae | |
| Rivulus schuncki | Costa & De Luca, 2011 | Melanorivulus schuncki | Rivulidae | |
| Rivulus siegfriedi | Bussing, 1980 | Cynodonichthys siegfriedi | Rivulidae | |
| Rivulus simplicis | Costa, 2004 | Atlantirivulus simplicis | Rivulidae | |
| Rivulus speciosus | Fels & de Rham, 1981 | Anablepsoides speciosus | Rivulidae | |
| Rivulus staecki | Schindler & Valdesalici, 2011 | Laimosemion staecki | Rivulidae | |
| Rivulus stagnatus | Eigenmann, 1909 | Anablepsoides stagnatus | Rivulidae | |
| Rivulus stellifer | Thomerson & Turner, 1973 | Llanolebias stellifer | Rivulidae | |
| Rivulus strigatus | Regan, 1912 | Laimosemion strigatus | Rivulidae | |
| Rivulus taeniatus | Fowler, 1945 | Anablepsoides taeniatus | Rivulidae | |
| Rivulus tecminae | Thomerson, Nico & Taphorn, 1992 | Laimosemion tecminae | Rivulidae | |
| Rivulus tenuis | (Meek, 1904) | Cynodonichthys tenuis | Rivulidae | Dogtooth rivulus |
| Rivulus tessellatus | Huber, 1992 | Anablepsoides tessellatus | Rivulidae | |
| Rivulus tocantinensis | Costa, 2010 | Anablepsoides tocantinensis | Rivulidae | |
| Rivulus tomasi | Vermeulen, Valdesalici & Garcia-Gil, 2013 | Rivulus tomasi | Rivulidae | |
| Rivulus torrenticola | Vermeulen & Isbrücker, 2000 | Laimosemion torrenticola | Rivulidae | |
| Rivulus uakti | Costa, 2004 | Laimosemion uakti | Rivulidae | |
| Rivulus uatuman | Costa, 2004 | Laimosemion uatuman | Rivulidae | |
| Rivulus unaensis | Costa & De Luca, 2009 | Atlantirivulus unaensis | Rivulidae | |
| Rivulus uroflammeus | Bussing, 1980 | Cynodonichthys uroflammeus | Rivulidae | |
| Rivulus uroflammeus siegfriedi | Bussing, 1980 | Cynodonichthys siegfriedi | Rivulidae | |
| Rivulus uroflammeus uroflammeus | Bussing, 1980 | Cynodonichthys uroflammeus | Rivulidae | |
| Rivulus urophthalmus | Günther, 1866 | Anablepsoides urophthalmus | Rivulidae | |
| Rivulus urophthalmus aurata | Schreitmüller, 1919 | Anablepsoides urophthalmus | Rivulidae | |
| Rivulus villwocki | Berkenkamp & Etzel, 1997 | Cynodonichthys villwocki | Rivulidae | |
| Rivulus violaceus | Costa, 1991 | Melanorivulus violaceus | Rivulidae | |
| Rivulus vittatus | Costa, 1989 | Melanorivulus vittatus | Rivulidae | |
| Rivulus volcanus | Hildebrand, 1938 | Cynodonichthys hildebrandi | Rivulidae | |
| Rivulus waimacui | Eigenmann, 1909 | Anablepsoides waimacui | Rivulidae | |
| Rivulus wassmanni | Berkenkamp & Etzel, 1999 | Cynodonichthys wassmanni | Rivulidae | |
| Rivulus weberi | Huber, 1992 | Cynodonichthys weberi | Rivulidae | |
| Rivulus xanthonotus | Ahl, 1926 | Anablepsoides xanthonotus | Rivulidae | |
| Rivulus xi | Vermeulen, 2013 | Rivulus xi | Rivulidae | |
| Rivulus xinguensis | Costa, 2010 | Anablepsoides xinguensis | Rivulidae | |
| Rivulus xiphidius | Huber, 1979 | Laimosemion xiphidius | Rivulidae | |
| Rivulus zygonectes | Myers, 1927 | Melanorivulus zygonectes | Rivulidae |