absconditus, Catoprion Mateussi [N. T. B.], Melo [B. F.] & Oliveira [C.] 2020:12, Figs. 8-12 [Journal of Fish Biology v. 97 (no. 3); ref. 37676] Igarapé do Campo, Rio Jufari, Rio Branco basin, Caracaraí, Roraima, Brazil, 01°03'54"S, 62°07'46"W. Holotype: MZUSP 125764. Paratypes: ANSP, AUM, INPA, LBP, MZUSP. Plus additional non-type material. •Valid as Catoprion absconditus Mateussi, Melo & Oliveira 2020 -- (Silvano et al. 2020:154 [ref. 38133], Taphorn et al. 2022:27 [ref. 41297], Ota et al. 2024:404 [ref. 40817]). Current status: Valid as Catoprion absconditus Mateussi, Melo & Oliveira 2020. Serrasalmidae: Serrasalminae. Distribution: South America: central and eastern Amazon and Essequibo River basins (Brazil and Guyana). Habitat: freshwater.