illuminatus, Rivulus Costa [W. J. E. M.] 2007:194, Figs. 1-2 [Ichthyological Exploration of Freshwaters v. 18 (no. 3); ref. 29337] Near road GO-174, 23 kilometers north of Montividiu, 17°13'35.0"S, 51°09'19.9"W, rio dos Bois drainage, swampy floodplains of Córrego da Queixada, Estado de Goiás, Brazil, elevation 805 meters. Holotype: UFRJ 6463. Paratypes: UFRJ 6464 (2), 6465 (5), 6466 (4, c&s), 6472 (2). •Valid as Rivulus illuminatus Costa 2007 -- (Costa 2008:85 [ref. 29717]). •Valid as Melanorivulus illuminatus (Costa 2007) -- (Costa 2011:241 [ref. 31655], Costa 2012:217 [ref. 32292], Nielsen et al. 2016:87 [ref. 34407], Volcan et al. 2017:92 [ref. 35156]). Current status: Valid as Melanorivulus illuminatus (Costa 2007). Rivulidae: Rivulinae. Distribution: Dos Bois River drainage, Paraná River basin, Goiás, Brazil. Habitat: freshwater.