mexicanus, Tetragonopterus De Filippi [F.] 1853:166 [3] [Revue et Magasin de Zoologie (Sér. 2) v. 5; ref. 17378] A lake near Mexico [probably Lake Tequesquitengo, Pacific drainage, Mexico]. Lectotype: ZMUC 941. Paralectotypes: MZUT 159 (3), ZMUC 942 (1). Type catalog: Tortonese 1940:138 [ref. 21559], Nielsen 1974:46 [ref. 9588]. On p. 3 of separate. Lectotype selected by Schmitter-Soto 2017:1391 [ref. 35414]? •Synonym of Astyanax fasciatus [complex] (Cuvier 1819) -- (Romero & Paulson 2001:22 [ref. 26040]). •Valid as Astyanax mexicanus (De Filippi 1853) -- (Lee et al. 1980:139 [ref. 22416], Tomelleri & Eberle 1990:75 [ref. 24089], Page & Burr 1991:62 [ref. 18983], Espinosa Pérez et al. 1993:25 [ref. 22290], Bussing 1998:80 [ref. 24179], Fuller et al. 1999:180 [ref. 25838], Buckup in Reis et al. 2003:111 [ref. 27061], Nelson et al. 2004:80 [ref. 27807], Panaram & Borowsky 2005:409 [ref. 28248], Miller 2006:156 [ref. 28615], Scharpf 2006:13 [ref. 30386], Mirande et al. 2007:38 [ref. 29333], Bussing 2009:1361 [ref. 30066], Minckley & Marsh 2009:103 [ref. 31114], Mirande 2010:515 [ref. 31006], Page & Burr 2011:340 [ref. 31215], Page et al. 2013:81 [ref. 32708], Schmitter-Soto 2016:130 [ref. 34424], Terán et al. 2017:7 [ref. 35358], Schmitter-Soto 2017:1389 [ref. 35414], Raz-Guzmán et al. 2018:344 [ref. 36407], Miranda-Gamboa et al. 2023:96 [ref. 40047], Page et al. 2023:77 [ref. 40505]). Current status: Valid as Astyanax mexicanus (De Filippi 1853). Characidae: Stethaprioninae. Distribution: Southern North America: Balsas River basin, Armería River and other adjacent smaller drainages in Colima, Jalisco, Morelos and Guerrero, Pacific slope (Mexico). Habitat: freshwater.