Species that contain: Mylossoma and aureum [ 4 ] records

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], 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 (Brazil, Peru, Ecuador, Colombia, Bolivia and Venezuela). Habitat: freshwater.

herniarius, Myletes Cope [E. D.] 1872:268, Pl. 12 (fig. 3) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Río Ambyiacu, Peru. Lectotype: ANSP 8025. Paralectotype: ANSP 7990 (1). Type catalog: Böhlke 1984:48 [ref. 13621] as hernarius. Lectotype selected by Fowler 1907:476, Fig. 56 [ref. 1374]. •Synonym of Mylossoma duriventris Cuvier 1817 -- (authors). •Synonym of Mylossoma aureum (Spix & Agassiz 1829) -- (Taphorn 1992:284 [ref. 23654], Jégu in Reis et al. 2003:187 [ref. 27061], Mateussi et al. 2018:287 [ref. 35820], Ota et al. 2024:416 [ref. 40817]). Current status: Synonym of Mylossoma aureum (Spix & Agassiz 1829). Serrasalmidae: Colossomatinae. Habitat: freshwater.

unimaculatus, Metynnis Steindachner [F.] 1908:326 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 45 (no. 17) (for 2 July 1908); ref. 18805] Lake at Rio Medonho, tributary of Rio Parnahyba north of Santa Filomena, Brazil [type locality incorrect, Mateussi et al. 2018:303 [ref. 35820], probably the lower Rio Tocantins basin]. Syntypes: (several) NMW 56451 (3). •Questionably a synonym of Mylossoma aureum (Spix & Agassiz 1829) -- (Taphorn 1992:285 [ref. 23654]). •Synonym of Mylossoma duriventre (Cuvier 1818) -- (Zarske & Géry 1999:188 [ref. 23984] as duriventris, Jégu in Reis et al. 2003:187 [ref. 27061], Litz & Koerber 2014:9 [ref. 33622], Mirande & Koerber 2015:15 [ref. 35117], Koerber et al. 2017:22 [ref. 35267]). •Valid as Mylossoma unimaculatum (Steindachner 1908) -- (Mateussi et al. 2018:299 [ref. 35820], Koerber et al. 2022:18 [ref. 39235], Ota et al. 2024:417 [ref. 40817]). Current status: Valid as Mylossoma unimaculatum (Steindachner 1908). Serrasalmidae: Colossomatinae. Distribution: South America: Tocantins-Araguaia system, Amazon basin (Brazil). Habitat: freshwater.

ventriosa, Mylosomma Norman [J. R.] 1929:815, Fig. 20 [Proceedings of the Zoological Society of London [v. 98] (pt 4) (no. 52)(art. 30) (for 1928); ref. 3218] Rio Solimões, Amazon River basin. Holotype (unique): BMNH 1923.10.28.263. •Synonym of Mylossoma aureum (Spix & Agassiz 1829) -- (Jégu in Reis et al. 2003:187 [ref. 27061], Mateussi et al. 2018:287 [ref. 35820], Ota et al. 2024:416 [ref. 40817]). Current status: Synonym of Mylossoma aureum (Spix & Agassiz 1829). Serrasalmidae: Colossomatinae. Habitat: freshwater.