caudomaculatus, Tetragonopterus Günther [A.] 1864:330 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] South America [possibly Essequibo River basin, Guyana]. Holotype (unique): BMNH 1852.9.13.74. •Valid as Bryconops caudomaculatus (Günther 1864) -- (Machado-Allison et al. 1993:7 [ref. 22035], Chernoff et al. 1994:241 [ref. 22044], Planquette et al. 1996:266 [ref. 22818], Machado-Allison & Chernoff 1997:68 [ref. 23462], Machado-Allison et al. 1996:45 [ref. 23463], Chernoff & Machado-Allison 1999:368 [ref. 24235], Buckup in Reis et al. 2003:119 [ref. 27061], Chernoff & Machado-Allison 2005:7 [ref. 28573], Chernoff & Machado-Allison 2005:20 [ref. 28573], Wingert & Malabarba 2011:474 [ref. 31515], Barriga Salazar 2014:106 [ref. 35745], Sarmiento et al. 2014:184 [ref. 35004], Silva-Oliveira et al. 2015:140 [ref. 33906], Guedes et al. 2016:[11] [ref. 34534] and as cf. caudomaculatus, 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. 36876], Silvano et al. 2020:68 [ref. 38133], Silva-Oliveira et al. 2021:10 [ref. 38878], Meza-Vargas et al. 2021:20 [ref. 39298], Borstein et al. 2022:16 [ref. 39507], Koerber et al. 2022:28 [ref. 39235], Silva-Oliveira & Lima 2024:372 [ref. 40817]Es). Current status: Valid as Bryconops caudomaculatus (Günther 1864). Iguanodectidae. Distribution: South America: coastal streams of the Guiana Shield, Orinoco and Amazon River basins (Brazil, Ecuador, Colombia, Bolivia, Peru, French Guiana, Guyana, Suriname and Venezuela). Habitat: freshwater.