affinis, Auchenipterus (Pseudauchenipterus) Steindachner [F.] 1877:651 [93] [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4224] Rio São Matheus; Rio Mucury at Porto Allegre, southeastern Brazil. Syntypes: (several) NMW 47384-87 (2, 2, 2, 2). Type catalog: Ferraris 2007:76 [ref. 29155]. On p. 93 of separate. •Valid as Pseudauchenipterus affinis (Steindachner 1877) -- (Burgess 1989:241 [ref. 12860], Ferraris in Reis et al. 2003:476 [ref. 27061], Ferraris 2007:76 [ref. 29155], Birindelli 2014:535 [ref. 33501], Calegari et al. 2019:[92] [ref. 36961], Silva et al. 2020:9 [ref. 37809], Vieira-Guimarães et al. 2024:42 [ref. 41258]). Current status: Valid as Pseudauchenipterus affinis (Steindachner 1877). Auchenipteridae: Auchenipterinae. Distribution: South America: Mucuri and São Mateus River basins (Brazil). Habitat: freshwater.