Hemibrycon (subgenus of Tetragonopterus) Günther [A.] 1864:318, 330 Masc. Tetragonopterus polyodon Günther 1864. Type by monotypy. Described in key (p. 318) as section or subgenus of Tetragonopterus with corresponding species on p. 330. •Valid as Hemibrycon Günther 1864 -- (Géry 1977:378 [ref. 1597], Taphorn 1992:197 [ref. 23654], Malabarba in Reis et al. 2003:129 [ref. 27061], Román-Valencia et al. 2006:209 [ref. 28983], Román-Valencia et al. 2007:180 [ref. 29496], Román-Valencia & Arcila-Mesa 2008:74 [ref. 29744], Mirande 2009:8 [ref. 30267] in Characidae, Stevardiinae, Román-Valencia & Arcila-Mesa 2009:78 [ref. 30718], Román-Valencia et al. 2009:27 [ref. 30722], Román-Valencia & Arcila-Mesa 2010:339 [ref. 30721], Román-Valencia et al. 2010:99 [ref. 30945], Mirande 2010:533 [ref. 31006], Bertaco & Malabarba 2010:738 [ref. 31076], Oliveira et al. 2011:16 [ref. 31685], Román-Valencia et al. 2013:1365 [ref. 32877], Sarmiento et al. 2014:184 [ref. 35004], García-Alzate et al. 2015:89 [ref. 33838], Thomaz et al. 2015:8 [ref. 33893] in Stevardiinae, tribe Hemibryconini, García-Melo et al. 2018:[1] [ref. 35894], Román-Valencia et al. 2018:38 [ref. 36348], García-Melo et al. 2019:13 [ref. 36761], Ardila Rodríguez 2020:1 [ref. 37579], Ruiz-C. et al. 2023:215 [ref. 40482], Melo et al. 2024:10 [ref. 41541] in Hemibryconinae). Current status: Valid as Hemibrycon Günther 1864. Stevardiidae: Hemibryconinae.