ceros, Moenkhausia Eigenmann [C. H.] 1908:104 [Bulletin of the Museum of Comparative Zoology v. 52 (no. 6); ref. 1221] Lake Hyanuary, Amazonas, Brazil. Holotype (unique): MCZ 49161. •Valid as Moenkhausia ceros Eigenmann 1908 -- (Ortega & Vari 1986:9 [ref. 9708], Benine 2002:293 [ref. 26541], Benine in Reis et al. 2003:146 [ref. 27061], Sarmiento et al. 2014:185 [ref. 35004], Azevedo-Santos & Benine 2016:208 [ref. 34837], DoNascimiento et al. 2017:51 [ref. 35633], Meza-Vargas et al. 2021:19 [ref. 39298], Taphorn et al. 2022:17 [ref. 41297], Marinho & Benine 2024:224 [ref. 40817]). Current status: Valid as Moenkhausia ceros Eigenmann 1908. Acestrorhamphidae: Stichonodontinae. Distribution: South America: Amazon and Orinoco river basins (Bolivia, Brazil, Colombia, Guyana and Peru). Habitat: freshwater.