salmonicaudus, Rivulus Costa [W. J. E. M.] 2007:56, Figs. 1-2 [aqua, International Journal of Ichthyology v. 13 (no. 2); ref. 29394] Dom Bill creek, tributary to Rio Araguaia at road BR-070 crossing, ca. 44 kilometers west of Aparecida do Rio Claro, Montes Claros de Goiás, Goiás State, Brazil, 15°53'10.8"S, 51°43.23.8"W, elevation 320 meters. Holotype: MNRJ 6481. Paratypes: (37) MNRJ 1567 (5), 1575 (3), 6419 (20), 6420 (3), 6482 (6). •Valid as Rivulus salmonicaudus Costa 2007 -- (Costa 2010:369 [ref. 30690]). •Valid as Melanorivulus salmonicaudus (Costa 2007) -- (Costa 2011:241 [ref. 31655], Costa 2016:133 [ref. 34900], Costa et al. 2016:270 [ref. 35405], Nielsen 2017:66 [ref. 35340], Nielsen & Britzke 2019:42 [ref. 36525]). Current status: Valid as Melanorivulus salmonicaudus (Costa 2007). Rivulidae: Rivulinae. Distribution: Middle Araguaia River drainage, central Brazil. Habitat: freshwater.