pygmaeus, Priocharax Weitzman [S. H.] & Vari [R. P.] 1987:646, Fig. 6 [Proceedings of the Biological Society of Washington v. 100 (no. 3); ref. 6055] Quebrada Pajarito, Amazonas, Colombia, about 4°41'S, 69°57'W. Holotype: NRM 15048. Paratypes: MBUCV-V-15342 (5), MZUSP 36498 (5), NRM 17593 (41, 4 c&s), USNM 278479 (36, 6 c&s). Type catalog: Vari & Howe 1991:34 [ref. 19022], Oyakawa 1996:488 [ref. 23140], Provenzano et al. 1998:14 [ref. 24196]. •Valid as Priocharax pygmaeus Weitzman & Vari 1987 -- (Géry & Römer 1997:70 [ref. 23712], Lucena & Menezes in Reis et al. 2003:204 [ref. 27061], Toledo-Piza et al. 2014:237 [ref. 33370], DoNascimiento et al. 2017:47 [ref. 35633], Mattox et al. 2020:432 [ref. 37712], Mattox et al. 2021:15 [ref. 38426], Meza-Vargas et al. 2021:19 [ref. 39298], Mattox et al. 2023:15 [ref. 39984]). Current status: Valid as Priocharax pygmaeus Weitzman & Vari 1987. Acestrorhynchidae: Heterocharacinae. Distribution: South America: upper Amazon River basin (Colombia and Peru). Habitat: freshwater.