elegans, Rhamphichthys (Brachyrhamphichthys) Steindachner [F.] 1880:89 [37] [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 42; ref. 14403] Mouth of the Rio Negro, Brazil. Syntypes: NMW 76413 (2). Type catalog: Ferraris et al. 2017:[29] [ref. 35236]. Specimen on Pl. 9 (figs. 1-1a) is named Rhamphichthys (Brachyrhamphichthys) mirabilis in figure caption, a taxon not discussed in the text; evidently a mistake or unintentional naming for Rhamphichthys (Brachyrhamphichthys) elegans treated on p. 37 in the text. •Valid as Brachyhypopomus elegans (Steindachner 1880) -- (Mago-Leccia 1994:49 [ref. 21320]). •Valid as Steatogenys elegans (Steindachner 1880) -- (Schwassmann 1984:105 [ref. 5345], Ortega & Vari 1986:13 [ref. 9708], Albert & Campos-da-Paz 1998:423 [ref. 23853], Albert & Crampton in Reis et al. 2003:496 [ref. 27061], Crampton et al. 2004:78 [ref. 27504], Barriga Salazar 2014:116 [ref. 35745], Melo et al. 2016:134 [ref. 34701], Ferraris et al. 2017:[29] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Ochoa et al. 2020:64 [ref. 37781], Meza-Vargas et al. 2021:21 [ref. 39298], Lasso et al. in Lasso & Morales-Betancourt 2022:102 [ref. 40783], Torgersen et al. 2023:781 [ref. 40692]). Current status: Valid as Steatogenys elegans (Steindachner 1880). Rhamphichthyidae. Distribution: South America: Amazon and Orinoco river basins (Bolivia, Brazil, Colombia, Ecuador, Peru and Venezuela). Habitat: freshwater.