pesu, Brycon Müller [J.] & Troschel [F. H.] 1845:16, 30, Pl. 7 (fig. 1) [Horae Ichthyologicae Nos 1 & 2; ref. 3071] Guiana. Holotype: ZMB 3605. •Valid as Holobrycon pesu (Müller & Troschel 1845) -- (authors). •Valid as Brycon pesu Müller & Troschel 1845 -- (Howes 1982:41 [ref. 14201], Ortega & Vari 1986:7 [ref. 9708], Planquette et al. 1996:228 [ref. 22818], Malabarba 1998:76 [ref. 23840], Lima in Reis et al. 2003:178 [ref. 27061], Lima 2004:286 [ref. 27858], Mirande 2010:482 [ref. 31006], Barriga Salazar 2014:108 [ref. 35745], Sarmiento et al. 2014:44, 184 [ref. 35004], DoNascimiento et al. 2017:63 [ref. 35633], Silvano et al. 2020:63 [ref. 38133], Meza-Vargas et al. 2021:20 [ref. 39298], Borstein et al. 2022:16 [ref. 39507]). Current status: Valid as Brycon pesu Müller & Troschel 1845. Bryconidae: Bryconinae. Distribution: South America: Amazon and Orinoco river basins (Brazil, Colombia, Bolivia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela). Habitat: freshwater.