socolofi, Hyphessobrycon Weitzman [S. H.] 1977:327, Figs. 1-3 [Proceedings of the Biological Society of Washington v. 90 (no. 2); ref. 7294] Barcelos, 0°58'S, 62°57'W, Rio Negro, Amazonas, Brazil. Holotype: MZUSP 13181. Paratypes: BMNH 1977.1.19.1-2 (2), MZUSP 13182-83 (2), USNM 216612 (5). Type catalog: Vari & Howe 1991:27 [ref. 19022], Oyakawa 1996:470 [ref. 23140]. •Valid as Hyphessobrycon socolofi Weitzman 1977 -- (Weitzman & Palmer 1997:236 [ref. 22743], Zarske & Géry 1997:310 [ref. 23715], Weitzman & Palmer 1997:168 [ref. 24507], Lima & Malabarba in Reis et al. 2003:140 [ref. 27061], Bertaco & Malabarba 2005:87 [ref. 28297], Miquelarena & López 2006:824 [ref. 29070], Bertaco et al. 2007:248 [ref. 29277], Hein 2009:9 [ref. 30362], Mirande 2010:510 [ref. 31006], Pastana et al. 2017:13 [ref. 35596], Guimarães et al. 2020:106 [ref. 37899]). •Valid as Megalamphodus socolofi (Weitzman 1977)-- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus socolofi (Weitzman 1977). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Negro River basin, Amazonas, Brazil. Habitat: freshwater.