anas, Apteronotus Eigenmann [C. H.] & Allen [W. R.] 1942:321, Pl. 15 (fig. 1) [Fishes of western South America; ref. 1246] Iquitos, Amazon system, Peru. Holotype (unique): CAS 56510 [ex IU 15433]. Type catalog: Ferraris et al. 2017:[9] [ref. 35236]. •Valid as Apteronotus anas Eigenmann & Allen 1942 -- (Ortega & Vari 1986:12 [ref. 9708], Mago-Leccia 1994:28 [ref. 21320], Albert & Campos-da-Paz 1998:432 [ref. 23853] but genus uncertain). •Synonym of Apteronotus hasemani Ellis 1913 -- (Cox Fernandes et al. 2002:57 [ref. 25889]). •Synonym of Parapteronotus bonapartii (Castelnau 1855) -- (Triques 2007:84 [ref. 29060]). •Synonym of Parapteronotus hasemani (Ellis 1913) -- (Albert in Reis et al. 2003:499 [ref. 27061], Ferraris et al. 2017:[9] [ref. 35236]). Current status: Synonym of Parapteronotus hasemani (Ellis 1913). Apteronotidae: Apteronotinae. Habitat: freshwater.