Hemigrammus (subgenus of Poecilurichthys) Gill [T. N.] 1858:416, 420 Masc. Poecilurichthys (Hemigrammus) unilineatus Gill 1858. Type by monotypy in subgenus. See Benine et al. 2004:72 [ref. 27502]. •Valid as Hemigrammus Gill 1858 -- (Géry 1977:490 [ref. 1597], Taphorn 1992:200 [ref. 23654], Britski et al. 1999:39 [ref. 24147]. Lima & Oyakawa in Reis et al. 2003:130 [ref. 27061], Bertaco & Carvalho 2005:141 [ref. 28675], Zarske et al. 2006:23 [ref. 28749], Zarske & Géry 2007:6 [ref. 29231], Benine & Lopes 2007:53 [ref. 29305], Marinho et al.2008:52 [ref. 29547], Britski & Lima 2008:565 [ref. 29801], Lima et al. 2009:153 [ref. 30248], Mirande 2009:7 [ref. 30267] in Characidae, Hemigrammus clade, Lima & Sousa 2009:153 [ref. 30278], Marinho & Langeani 2010:887 [ref. 30927], Mirande 2010:500 [ref. 31006] in Characidae, Tetragonopterinae, Mendonça & Wosiacki 2011:211 [ref. 31415], Zarske 2011:3 [ref. 31376], Jerep et al. 2011:545 [ref. 31705]. Marinho et al. 2014:257 [ref. 33372], Ota et al. 2014:265 [ref. 33373], Sarmiento et al. 2014:46, 184 [ref. 35004], Ota et al. 2015:218 [ref. 33748], Lima et al. 2016:123 [ref. 34590], Reia & Benine 2019:407 [ref. 36527], Ota et al. 2019:335 [ref. 36619], Albornoz-Garzón et al. 2019:932 [ref. 36872], Lima et al. 2020:1 [ref. 37339], Melo et al. 2024:23 [ref. 41541] in Pristellinae). Current status: Valid as Hemigrammus Gill 1858. Acestrorhamphidae: Pristellinae.