flavipinnis, Melanorivulus Costa [W. J. E. M.] 2017:57, Figs. 4-5 [ZooKeys No. 645; ref. 35046] Stream tributary of Rio Anhumas, Rio São Lourenço drainage, Rio Paraguai basin, Rondonópolis municipality, Mato Grosso state, Brazil, 16°48'16"S, 54°40'52"W, elevation approximately 420 meters. Holotype: UFRJ 6881. Paratypes: CICCAA, UFRJ. •Valid as Melanorivulus flavipinnis Costa 2017 -- (Deprá et al. 2017:121 [ref. 35503]). Current status: Valid as Melanorivulus flavipinnis Costa 2017. Rivulidae: Rivulinae. Distribution: Rio São Lourenço drainage, Rio Paraguai basin, Mato Grosso, Brazil. Habitat: freshwater.