melanopterus, Imparfinis Silva [G. S. C.], Lopes [M. M.], Carvalho [K. R.], Oliveira [C.] & Sarmento-Soares [L. M.] 2026:263, Figs. 2, 3a [Zootaxa 5814 (no. 2); ref. 43102] Rio Corrente, Barra do Garça, Mato Grosso, Brazil, 15°29'57.3"S, 52°12'10.4"W. Holotype: LBP 38226. Paratypes: LBP, MNRJ, MZUEL, MZUSP. •Valid as Imparfinis melanopterus Silva, Lopes, Carvalho, Oliveira & Sarmento-Soares 2026. Current status: Valid as Imparfinis melanopterus Silva, Lopes, Carvalho, Oliveira & Sarmento-Soares 2026. Heptapteridae: Heptapterinae. Distribution: South America: middle Araguaia River basin, Mato Grosso, Brazil. Habitat: freshwater.