hypopterus, Bryconamericus Fowler [H. W.] 1943:242, Fig. 20 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 95; ref. 1443] Río Orteguasa, Florencia, Caquetá, Colombia. Holotype (unique): ANSP 70505. Type catalog: Böhlke 1984:48 [ref. 13621]. •Valid as Bryconamericus hypopterus Fowler 1943 -- (Román-Valencia 2000:460 [ref. 25256], Román-Valencia 2003:482 [ref. 27478], Román-Valencia 2003:23, 43 [ref. 26840], Román-Valencia et al. 2008:1749 [ref. 30068], Román-Valencia et al. 2009:2 [ref. 30393]). •Valid as Bryconacidnus hypopterus (Fowler 1943) -- (Thomaz et al. 2015:Add. 5 [ref. 33893], DoNascimiento et al. 2017:58 [ref. 35633]). •Valid as Knodus hypopterus (Fowler 1943) -- (Silva in Reis et al. 2003:143 [ref. 27061], Ferreira & Lima 2006:635 [ref. 28919], Román-Valencia et al. 2013:127 [ref. 32807], Esguícero & Castro 2014:47 [ref. 33506], Sarmiento et al. 2014:184 [ref. 35004], Dos Anjos de Sousa et al. 2020:583 [ref. 37361], Meza-Vargas et al. 2021:19 [ref. 39298]). Current status: Valid as Knodus hypopterus (Fowler 1943). Stevardiidae: Diapominae. Distribution: South America: upper Amazon River basin (Colombia, Peru and Bolivia). Habitat: freshwater.