obtusirostris, Sternopygus Steindachner [F.] 1881:143 [43], Pl. 2 (fig. 3) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 43; ref. 14290] Teffé, Lake Alexo, Mancapuru, Rio Puty and Rio Madeira, Brazil. Syntypes: (several) ?MCZ 9413 (1) Teffe, ?9425 (1) Rio Maues, ?9453 (1) Lago Alexo; NMW 64977-78 (1, 1), 65011-12 (1, 2), 65342 (1). Type catalog: Ferraris et al. 2017:[35] [ref. 35236]. On p. 43 of separate. •Synonym of Sternopygus macrurus (Bloch & Schneider 1801) -- (Albert & Fink 1996:89 [ref. 22024], Crampton et al. 2004:249 [ref. 27652]). •Valid as Sternopygus obtusirostris Steindachner 1881 -- (Mago-Leccia 1994:23 [ref. 21320], Albert in Reis et al. 2003:489 [ref. 27061], Crampton et al. 2004:122 [ref. 27764], Hulen et al. 2005:412 [ref. 28485], Ferraris et al. 2017:[35] [ref. 35236], Torgersen et al. 2023:24 [ref. 40151]). Current status: Valid as Sternopygus obtusirostris Steindachner 1881. Sternopygidae: Sternopyginae. Distribution: South America: main stream of Amazon River and lower Negro River basin, Brazil. Habitat: freshwater.