affinis, Tetragonopterus Günther [A.] 1864:329 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Guyana. Holotype (unique): BMNH 1969.12.13. 1. •Valid as Bryconops affinis (Günther 1864) -- (Géry et al. 1991:50 [ref. 21021], Taphorn 1992:140 [ref. 23654], Machado-Allison et al. 1993:9 [ref. 22035], Planquette et al. 1996:264 [ref. 22818], Machado-Allison et al. 1996:45 [ref. 23463], Britski et al. 1999:34 [ref. 24147], Chernoff & Machado-Allison 1999:369 [ref. 24235], Buckup in Reis et al. 2003:119 [ref. 27061], Chernoff & Machado-Allison 2005:21 [ref. 28573], Mirande 2010:488 [ref. 31006], Wingert & Malabarba 2011:474 [ref. 31515], Sarmiento et al. 2014:184 [ref. 35004], Melo et al. 2016:133 [ref. 34701], DoNascimiento et al. 2017:64 [ref. 35633], Silva-Oliveira et al. 2018:380 [ref. 36284], Silva-Oliveira et al. 2019:382 [ref. 36769], Silva et al. 2020:8 [ref. 37809], Borstein et al. 2022:16 [ref. 39507], Koerber et al. 2022:28 [ref. 39235], Taphorn et al. 2022:25 [ref. 41297], Vieira et al. 2023:18 [ref. 40759] as cf. affinis, Silva-Oliveira & Lima 2024:371 [ref. 40817]). Current status: Valid as Bryconops affinis (Günther 1864). Iguanodectidae. Distribution: South America: Amazon and Orinoco river basins (Brazil, Colombia, Bolivia, French Guiana, Guyana and Suriname). Habitat: freshwater.