peruanus, Tetragonopterus Müller [J.] & Troschel [F. H.] 1845:28, Pl. 8 (fig. 1) [Horae Ichthyologicae Nos 1 & 2; ref. 3071] Near Lima, Peru. Syntypes: ZMB 3591-92 (2, 1). Spelled peruanus in text and peruvianus on plate; Günther 1864:327 [ref. 1974] used peruvianus although he may not have been aware of the spelling peruvianus; first reviser not located. •Valid as Bryconamericus peruanus (Müller & Troschel 1845) -- (Ovchynnyk 1967:28 [ref. 37559], Ortega & Vari 1986:7 [ref. 9708], Castro et al. 1998:79 [ref. 24271], Román-Valencia 2002:184 [ref. 26370], Román-Valencia 2003:21, 35 [ref. 26840], Román-Valencia 2003:28 [ref. 27037], Silva in Reis et al. 2003:118 [ref. 27061], Román-Valencia 2005:62 [ref. 28949], Román-Valencia et al. 2008:1750 [ref. 30068], Román-Valencia et al. 2009:2 [ref. 30393], Román-Valencia et al. 2011:844 [ref. 31565], Román-Valencia et al. 2014:110 [ref. 33608]). •Valid as Eretmobrycon peruanus (Müller & Troschel 1845) -- (Thomaz et al. 2015:Add. [ref. 33893], DoNascimiento et al. 2017:54 [ref. 35633], Meza-Vargas et al. 2022:4 [ref. 39566], Román-Valencia et al. 2023:50 [ref. 40431], Valenzuela et al. 2023:95 [ref. 40815], Malabarba 2024:156 [ref. 40817]). Current status: Valid as Eretmobrycon peruanus (Müller & Troschel 1845). Characidae: Stevardiinae. Distribution: South America: Pacific slope rivers (Peru). Habitat: freshwater.