megalops, Astyanax Eigenmann [C. H.] in Eigenmann & Ogle 1907:29 [Proceedings of the United States National Museum v. 33 (no. 1556); ref. 1266] Itaituba, rio Tapajós basin, Brazil. Holotype (unique): CAS 71433 [ex IU 5192]. •Valid as Moenkhausia megalops (Eigenmann 1907) -- (Lucena & Lucena 1999:235 [ref. 24225], Benine in Reis et al. 2003:148 [ref. 27061], Géry & Zarske 2004:43 [ref. 28287], Sarmiento et al. 2014:185 [ref. 35004], Oliveira & Marinho 2016:573 [ref. 34342], Marinho & Langeani 2016:348 [ref. 34416], Azevedo-Santos & Benine 2016:208 [ref. 34837], Soares et al. 2017:256 [ref. 35237], DoNascimiento et al. 2017:51 [ref. 35633], Silvano et al. 2020:80 [ref. 38133], Meza-Vargas et al. 2021:19 [ref. 39298], Taphorn et al. 2022:18 [ref. 41297], Marinho & Benine 2024:231 [ref. 40817]). Current status: Valid as Moenkhausia megalops (Eigenmann 1907). Acestrorhamphidae: Stichonodontinae. Distribution: South America: Amazon and Orinoco river basins (Brazil, Colombia, Guyana, Peru and ?Venezuela). Habitat: freshwater.