schuncki, Rivulus Costa [W. J. E. M.] & De Luca [A. C.] 2011:290, Fig. 1 [Ichthyological Exploration of Freshwaters v. 21 (no. 4) [Dec. 2010]; ref. 31185] Stream near Vila Nova, road AP 030, Anauerapucu River basin, Amazonas River basin, 0°08'23"N, 51°32'14"W, Estado do Amapá, Brazil. Holotype: UFRJ 6766. Paratypes: UFRJ 6767 (4), 6768 (6, c&s). •Valid as Melanorivulus schuncki (Costa & De Luca 2011) -- (Costa 2011:241 [ref. 31655], Bragança et al. 2012:51 [ref. 32067], Melo et al. 2016:135 [ref. 34701], Costa et al. 2016:270 [ref. 35405]). Current status: Valid as Melanorivulus schuncki (Costa & De Luca 2011). Rivulidae: Rivulinae. Distribution: Amazon River basin, Brazil. Habitat: freshwater.