parvulus, Oxybrycon Géry [J.] 1964:16, Fig. 13 [Beiträge zur Neotropischen Fauna v. 4 (no. 1); ref. 1580] Small creek connecting "Zapote Cocha" and "Caño Yarina", on edge of Río Pacaya, tributary of lower Río Ucayali, Peru. Holotype: ZFMK 1331. Paratypes: (39) ANSP 139709 (1); MHNG 2150.18-27 (10), ZFMK 1332-1357 (26), ZMA 113861 (2). Type catalog: Nijssen et al. 1982:23 [ref. 19236], Busse 1984:219 [ref. 28342], Herder et al. 2010:117 [ref. 31087]. •Valid as Oxybrycon parvulus Géry 1964 -- (Ortega & Vari 1986:9 [ref. 9708], Géry & Römer 1997:70 [ref. 23712], Pavanelli in Reis et al. 2003:152 [ref. 27061], DoNascimiento et al. 2017:53 [ref. 35633], Meza-Vargas et al. 2021:19 [ref. 39298]). Current status: Valid as Oxybrycon parvulus Géry 1964. Acestrorhamphidae: Oxybryconinae. Distribution: South America: upper Amazon basin (Peru and Colombia). Habitat: freshwater.