affinis, Oxydoras Steindachner [F.] 1881:107 [7], Pl. 1 (figs. 1-1a) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 43; ref. 14290] Rio Puty [= rio Poti, Piaui], Brazil. Holotype (unique): NMW 45394. Type catalog: Ferraris 2007:171 [ref. 29155]. On p. 7 of separate. •Valid as Hassar affinis (Steindachner 1881) -- (Burgess 1989:222 [ref. 12860], de Pinna 1998:307 [ref. 23847], Sabaj & Ferraris in Reis et al. 2003:461 [ref. 27061], Ferraris 2007:171 [ref. 29155], Birindelli et al. 2011:517 [ref. 31519], Sabaj Pérez & Birindelli 2013:149 [ref. 32562], Birindelli 2014:538 [ref. 33501], Ramos et al. 2014:4 [ref. 35321], Reis et al. 2016:17 [ref. 34496], Melo et al. 2016:376 [ref. 35317], Koerber et al. 2022:58 [ref. 39235], Vieira et al. 2023:20 [ref. 40759], Limeira-Filho et al. 2024:7 [ref. 41573]). Current status: Valid as Hassar affinis (Steindachner 1881). Doradidae: Doradinae. Distribution: South America: river basins (northeastern Brazil). IUCN (2022): Least Concern. Habitat: freshwater.