tenebrosum, Hoplisoma Tencatt [L. F. C.], Ohara [W. M.], Carvalho [V.], Grant [S.] & Britto [M.] 2025:30, Figs. 3B, 19-30 [Neotropical Ichthyology v. 23 (no. 1): e240100; ref. 42064] Igarapé Águabranca (= Ipixuna) at the confluence with the igarapé Palomita, rio Tapajós basin, rio Amazonas basin, Maués, Amazonas, Brazil, approximately 06°36'S, 58°37'W. Holotype: MNRJ 55757. Paratypes: CITL, CPUFMT, INPA, MNRJ, NUP. •Valid as Hoplisoma tenebrosum Tencatt, Ohara, Carvalho, Grant & Britto 2025. Current status: Valid as Hoplisoma tenebrosum Tencatt, Ohara, Carvalho, Grant & Britto 2025. Callichthyidae: Corydoradinae. Distribution: South America: Tapajós River drainage, Amazon basin, Brazil. Habitat: freshwater.