aeneus, Tetragonopterus Günther [A.] 1860:319 [4] [Proceedings of the Zoological Society of London 1860 (pt 2) (art. 6); ref. 18212] Arroyo Las Flores, Oaxaca, Mexico. Lectotype: BMNH 1860.6.17.41. Paralectotype: BMNH 1860.6.17.42 (1). On p. 4 of separate. Invalid lectotype selection by Schmitter-Soto 2017:1354 [ref. 35414], this specimen BMNH 1907.4.10.3 is not part of the type series of Tetragonopterus aeneus Günther 1860 [ICZN Art. 74.2]. See also at Astyanax belizianus. Lectotype designated by Schmitter-Soto 2021:1071 [ref. 38564]. •Treated as a synonym of Astyanax aff. fasciatus (Cuvier 1819) -- (Malabarba 1989:129 [ref. 14217]). •Synonym of Astyanax fasciatus (Cuvier 1819) -- (Buckup in Reis et al. 2003:109 [ref. 27061]). •Valid as Astyanax aeneus (Günther 1860) -- (Greenfield & Thomerson 1997:74 [ref. 22947], Schmitter-Soto 1998:350 [ref. 23326], Bussing 1998:79 [ref. 24179], Smith et al. 2003:11 [ref. 27621], Nelson et al. 2004:80 [ref. 27807], Miller 2006:154 [ref. 28615], Protogino et al. 2006:12 [ref. 28780], Scharpf 2006:13 [ref. 30386], Schmitter-Soto et al. 2008:409 [ref. 29633], Bussing 2009:1361 [ref. 30066], Matamoros et al. 2009:9 [ref. 31241], McMahan et al. 2013:444 [ref. 32422], Page et al. 2013:81 [ref. 32708], Angulo et al. 2013:991 [ref. 33194], Barrientos et al. 2015:4 [ref. 37653], Schmitter-Soto 2016:129 [ref. 34424], Schmitter-Soto 2017:[22] 1352 [ref. 35414], Romero-Berny et al. 2018:89 [ref. 35859], González-Murcia et al. 2019:290 [ref. 36544], Schmitter-Soto 2021:1071 [ref. 38564], Angulo et al. 2023:22 [ref. 40676], Barrientos et al. 2023:271 [ref. 41235], Ornelas-García et al. 2023:[5] 99 [ref. 40738], Page et al. 2023:76 [ref. 40505], Quintana 2024:5 [ref. 41186]). Current status: Valid as Astyanax aeneus (Günther 1860). Acestrorhamphidae: Acestrorhamphinae. Distribution: Southwestern North America and Middle America: Río Papagayo, Guerrero (Mexico) south to Río Choluteca (Honduras). Habitat: freshwater.