britzi, Priocharax Mattox [G. M. T.], Souza [C. S.], Toledo-Piza [M.] & Oliveira [C.] 2021:5, Figs. 1-6 [Neotropical Ichthyology v. 19 (no. 2): e210048; ref. 38426] Small lake approximately 400 m from the rio Ipixuna, after bridge crossing this river, on the right side of the Transamazônica Road (BR-230) going from Humaitá to Lábrea, upper Purus basin, Canutama, Amazonas, Brazil, 07°31'11.46"S, 63°20'59.58"W. Holotype: MZUSP 125822. Paratypes: LBP, MZUSP, UFRO. •Valid as Priocharax britzi Mattox, Souza, Toledo-Piza & Oliveira 2021 -- (Mattox et al. 2023:15 [ref. 39984]). Current status: Valid as Priocharax britzi Mattox, Souza, Toledo-Piza & Oliveira 2021. Acestrorhynchidae: Heterocharacinae. Distribution: South America: Rio Ipixuna drainage, upper Purus basin, Amazonas, Brazil. Habitat: freshwater.