Astyanacinus Eigenmann [C. H.] 1907:769 Masc. Tetragonopterus moorii Boulenger 1892. Type by original designation (also monotypic). Spelled Astycinus by Jordan 1920:522 [ref. 4905] and Astyacinus by Neave 1939:337 [ref. 12569]. •Synonym of Astyanax Baird & Girard 1854 -- (Ruiz-C. et al. 2018:3 [ref. 35787], Terán et al. 2020:9 [ref. 37440]). •Valid as Astyanacinus Eigenmann 1907 -- (Géry 1977:415 [ref. 1597], Britski et al. 1999:36 [ref. 24147], Lima in Reis et al. 2003:107 [ref. 27061], Mirande 2009:11 [ref. 30267] as incertae sedis in Characidae, Bertaco et al. 2010:265 [ref. 30864] but redefined, Mirande 2010:545 [ref. 31006], Mirande et al. 2011:13 [ref. 31465], Torres-Mejia et al. 2012:501 [ref. 32312], Dagosta 2024:92 [ref. 40817], Melo et al. 2024:28 [ref. 41541] in Grundulinae). Current status: Valid as Astyanacinus Eigenmann 1907. Acestrorhamphidae: Grundulinae.