nitidus, Tetragonopterus Bocourt [F.] 1868:62 [Annales des Sciences Naturelles, Paris (Zoologie et Paléontologie) (Sér. 5) v. 9; ref. 16971] Tasco, Mexico. Syntypes: MNHN 0000-5191 (3). Type catalog: Bertin 1948:20 [ref. 19577]. Description very brief. •Questionably a synonym of Astyanax mexicanus (De Filippi 1853) -- (Buckup in Reis et al. 2003:111 [ref. 27061]). •Synonym of Astyanax mexicanus (De Filippi 1853) -- (Schmitter-Soto 2017:1389 [ref. 35414]). Current status: Uncertain as Astyanax mexicanus (De Filippi 1853). Characidae: Stethaprioninae. Habitat: freshwater.