aureus, Myletes Spix [J. B. von] & Agassiz [L.] 1829:74, Pl. 31 [Selecta genera et species piscium quos in itinere per Brasiliam; ref. 13] Equatorial rivers of Brazil [= lower Amazon basin]. Lectotype: MHNN 788-A. Paralectotype: MHNN 788-B (1). Type catalog: Kottelat 1984:146 [ref. 21784], Kottelat 1988:84 [ref. 13380]. As Tetragonopterus aureus Spix on plate. Lectotype selected by Mateussi et al. 2018:291 [ref. 35820]. •Valid as Mylossoma aureum (Spix & Agassiz 1829) -- (Ovchynnyk 1967:30 [ref. 37559], Ortega & Vari 1986:9 [ref. 9708], Taphorn 1992:284 [ref. 23654], Jégu in Reis et al. 2003:187 [ref. 27061] with author as Agassiz, Barriga Salazar 2014:108 [ref. 35745], Sarmiento et al. 2014:90, 187 [ref. 35004], Ramos et al. 2014:4 [ref. 35321], DoNascimiento et al. 2017:37 [ref. 35633], Mateussi et al. 2018:287 [ref. 35820], Valdiviezo-Rivero et al. 2020:320 [ref. 37420], Meza-Vargas et al. 2021:17 [ref. 39298], Taphorn et al. 2022:29 [ref. 41297], Ota et al. 2024:416 [ref. 40817] with author as Agassiz). Current status: Valid as Mylossoma aureum (Spix & Agassiz 1829). Serrasalmidae: Colossomatinae. Distribution: South America: widespread across the Amazon and Orinoco river basins (Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru and Venezuela). Habitat: freshwater.