pyrrhonotus, Hyphessobrycon Burgess [W. E.] 1993:157, Figs. [Tropical Fish Hobbyist v. 42 (no. 1); ref. 20808] Rio Ereré, tributary to Rio Negro, Brazil. Holotype: MZUSP 45714. Paratypes: USNM 326184 (8). Type catalog: Oyakawa 1996:469 [ref. 23140]. •Valid as Hyphessobrycon pyrrhonotus Burgess 1993 -- (Weitzman & Palmer 1997:236 [ref. 22743], Zarske & Géry 1997:310 [ref. 23715], Weitzman & Palmer 1997:170 [ref. 24507], Lima & Malabarba in Reis et al. 2003:139 [ref. 27061], Hein 2009:9 [ref. 30362] as phyrronotus, Guimarães et al. 2019:351 [ref. 36774], Guimarães et al. 2020:106 [ref. 37899]). Current status: Valid as Hyphessobrycon pyrrhonotus Burgess 1993. Acestrorhamphidae: Hyphessobryconinae. Distribution: Negro River basin, Brazil. Habitat: freshwater.