diancistrus, Hyphessobrycon Weitzman [S. H.] 1977:349, Figs. 1-3, 6 [Proceedings of the Biological Society of Washington v. 90 (no. 2); ref. 7295] Río Vichada, Vichada, ca. 4°14'N, 70°20'W, 50 kilometers west of San José de Ocuné, Colombia. Holotype: USNM 216607. Paratypes: BMNH 1977.1.12.1-2 (2), MZUSP 13179-80 (2), USNM 216606 (2, 1 c&s). Type catalog: Vari & Howe 1991:26 [ref. 19022], Oyakawa 1996:467 [ref. 23140]. •Valid as Hyphessobrycon diancistrus Weitzman 1977 -- (Lima & Malabarba in Reis et al. 2003:135 [ref. 27061], Benine & Lopes 2008:67 [ref. 29589], García-Alzate et al. 2008:48 [ref. 29671], García-Alzate et al. 2008:142 [ref. 29919], García-Alzate & Román-Valencia 2008:13 [ref. 30008], García-Alzate et al. 2010:39 [ref. 30724], García-Alzate et al. 2010:55 [ref. 30716], García-Alzate et al.2010:801 [ref. 30824], García-Alzate et al. 2010:455 [ref. 31066], García-Alzate et al. 2011:709 [ref. 31266], Dagosta et al. 2014:366 [ref. 33382], Lima et al. 2014:177 [ref. 33535], García-Alzate et al. 2015:223 [ref. 33855], Bragança et al. 2015:260 [ref. 34051], García-Alzate et al. 2017:125 [ref. 35253], Ohara et al. 2017:10 [ref. 35494], DoNascimiento et al. 2017:49 [ref. 35633], Urbano-Bonilla et al. 2018:87 [ref. 35773], Guimarães et al. 2018:82 [ref. 35965], Ota et al. 2020:432 [ref. 37391], Lima et al. 2022:263 [ref. 39116]). Current status: Valid as Hyphessobrycon diancistrus Weitzman 1977. Acestrorhamphidae: Hyphessobryconinae. Distribution: Upper Orinoco and Amazon River basins: Brazil, Colombia and Venezuela. Habitat: freshwater.