Astyanax is een geslacht van straalvinnige vissen uit de familie van karperzalmen (Characidae).

Soorten 
 Astyanax abramis Jenyns, 1842
 Astyanax aeneus Günther, 1860
 Astyanax ajuricaba Marinho & Lima, 2009
 Astyanax alburnus Hensel, 1870
 Astyanax altior Hubbs, 1936 (Yucatán tetra)
 Astyanax altiparanae Garutti & Britski, 2000
 Astyanax angustifrons Regan, 1908
 Astyanax anterior Eigenmann, 1908
 Astyanax aramburui Protogino, Miquelarena & López, 2006
 Astyanax argyrimarginatus Garutti, 1999
 Astyanax asuncionensis Géry, 1972
 Astyanax atratoensis Eigenmann, 1907
 Astyanax aurocaudatus Eigenmann, 1913
 Astyanax bifasciatus Garavello & F. A. A. Sampaio, 2010
 Astyanax bimaculatus Linnaeus, 1758
 Astyanax biotae Castro & Vari, 2004
 Astyanax bockmanni Vari & Castro 2007
 Astyanax bourgeti Eigenmann, 1908
 Astyanax brachypterygium Bertaco & Malabarba, 2001
 Astyanax brevirhinus Eigenmann, 1908
 Astyanax burgerai Zanata & Camelier, 2009
 Astyanax caucanus Steindachner, 1879
 Astyanax chaparae Fowler, 1943
 Astyanax chico Casciotta & Almirón, 2004
 Astyanax clavitaeniatus Garutti, 2003
 Astyanax cocibolca Bussing, 2008
 Astyanax cordovae Günther, 1880
 Astyanax correntinus Holmberg, 1891
 Astyanax courensis Bertaco, de Carvalho & Jerep, 2010
 Astyanax cremnobates Bertaco & Malabarba, 2001
 Astyanax daguae Eigenmann, 1913
 Astyanax depressirostris Ribeiro, 1908
 Astyanax dissimilis Garavello & Sampaio, 2010
 Astyanax dnophos Lima & Zuanon, 2004
 Astyanax eigenmanniorum Cope, 1894
 Astyanax elachylepis Bertaco & Lucinda, 2005
 Astyanax endy Mirande, Aguilera & Azpelicueta, 2006
 Astyanax epiagos Zanata & Camelier, 2008
 Astyanax erythropterus Holmberg, 1891
 Astyanax fasciatus Cuvier, 1819
 Astyanax fasslii Steindachner, 1915
 Astyanax festae Boulenger, 1898
 Astyanax filiferus Eigenmann, 1913
 Astyanax gisleni Dahl, 1943
 Astyanax giton Eigenmann, 1908
 Astyanax goyacensis Eigenmann, 1908
 Astyanax goyanensis Miranda-Ribeiro, 1944
 Astyanax gracilior Eigenmann, 1908
 Astyanax guaporensis Eigenmann, 1911
 Astyanax guianensis Eigenmann, 1909
 Astyanax gymnodontus Eigenmann, 1911
 Astyanax gymnogenys Eigenmann, 1911
 Astyanax hastatus Myers, 1928
 Astyanax henseli de Melo & Buckup, 2006
 Astyanax hermosus Miquelarena, Protogino & López, 2005
 Astyanax integer Myers, 1930
 Astyanax intermedius Eigenmann, 1908
 Astyanax ita Almirón, Azpelicueta & Casciotta, 2002
 Astyanax jacobinae Zanata & Camelier, 2008
 Astyanax jacuhiensis Cope, 1894
 Astyanax janeiroensis Eigenmann, 1908
 Astyanax jenynsii Eigenmann, 1877
 Astyanax jordanensis Vera Alcaraz, Pavanelli & Bertaco, 2009
 Astyanax jordani Hubbs & Innes, 1936 (Cave tetra)
 Astyanax kennedyi Géry, 1964
 Astyanax kompi Hildebrand, 1938
 Astyanax kullanderi Costa, 1995
 Astyanax lacustris Lütken, 1875
 Astyanax latens Mirande, Aguilera & Azpelicueta, 2004
 Astyanax laticeps Cope, 1894
 Astyanax leonidas Azpelicueta, Casciotta & Almirón, 2002
 Astyanax leopoldi Géry, Planquette & Le Bail, 1988
 Astyanax lineatus Perugia, 1891
 Astyanax longior Cope, 1878
 Astyanax longirhinus Garavello & F. A. A. Sampaio, 2010
 Astyanax maculisquamis Garutti & Britski, 1997
 Astyanax magdalenae Eigenmann & Henn, 1916
 Astyanax marionae Eigenmann, 1911
 Astyanax maximus Steindachner, 1877
 Astyanax megaspilura Fowler, 1944
 Astyanax mexicanus De Filippi, 1853 – Mexicaanse tetra
 Astyanax microlepis Eigenmann, 1913
 Astyanax microschemos Bertaco & de Lucena, 2006
 Astyanax minor Garavello & F. A. A. Sampaio, 2010
 Astyanax multidens Eigenmann, 1908
 Astyanax mutator Eigenmann, 1909
 Astyanax myersi Fernández-Yépez, 1950
 Astyanax nasutus Meek, 1907
 Astyanax nicaraguensis Eigenmann & Ogle, 1907
 Astyanax obscurus Hensel, 1870
 Astyanax ojiara Azpelicueta & Garcia, 2000
 Astyanax orbignyanus Valenciennes, 1850
 Astyanax orthodus Eigenmann, 1907
 Astyanax pampa Casciotta, Almirón & Azpelicueta, 2005
 Astyanax paraguayensis Fowler, 1918
 Astyanax parahybae Eigenmann, 1908
 Astyanax paranae Eigenmann, 1914
 Astyanax paranahybae Eigenmann, 1911
 Astyanax paris Azpelicueta, Almirón & Casciotta, 2002
 Astyanax pedri Eigenmann, 1908
 Astyanax pelecus Bertaco & de Lucena, 2006
 Astyanax pellegrini Eigenmann, 1907
 Astyanax pirapuan Tagliacollo, Britzke, Silva & Benine, 2011
 Astyanax poetzschkei Ahl, 1932
 Astyanax puka Mirande, Aguilera & Azpelicueta, 2007
 Astyanax pynandi Casciotta, Almirón, Bechara, Roux & Ruiz Díaz, 2003
 Astyanax ribeirae Eigenmann, 1911
 Astyanax rivularis Lütken, 1875
 Astyanax robustus Meek, 1912
 Astyanax ruberrimus Eigenmann, 1913
 Astyanax rupununi Fowler, 1914
 Astyanax saguazu Casciotta, Almirón & Azpelicueta, 2003
 Astyanax saltor Travassos, 1960
 Astyanax scabripinnis Jenyns, 1842
 Astyanax schubarti Britski, 1964
 Astyanax scintillans Myers, 1928
 Astyanax serratus Garavello & F. A. A. Sampaio, 2010
 Astyanax siapae Garutti, 2003
 Astyanax stenohalinus Messner, 1962
 Astyanax stilbe Cope, 1870
 Astyanax superbus Myers, 1942
 Astyanax symmetricus Eigenmann, 1908
 Astyanax taeniatus Jenyns, 1842
 Astyanax totae Ferreira Haluch & Abilhoa, 2005
 Astyanax trierythropterus Godoy, 1970
 Astyanax troya Azpelicueta, Casciotta & Almirón, 2002
 Astyanax tumbayaensis Miquelarena & Menni, 2005
 Astyanax tupi Azpelicueta, Mirande, Almirón & Casciotta, 2003
 Astyanax turmalinensis Triques, Vono & Caiafa, 2003
 Astyanax unitaeniatus Garutti, 1998
 Astyanax utiariti Bertaco & Garutti, 2007
 Astyanax validus Géry, Planquette & Le Bail, 1991
 Astyanax varzeae Abilhoa & Duboc, 2007
 Astyanax venezuelae Schultz, 1944
 Astyanax vermilion Zanata & Camelier, 2009
 Astyanax villwocki Zarske & Géry, 1999
 Astyanax xavante Garutti & Venere, 2009

Characidae