rufus, Simpsonichthys Costa [W. J. E. M.], Nielsen [D. T. B.] & de Luca [A. C.] 2001:29, Fig. [Aquarium (Brasil) v. 4 (no. 26); ref. 25934] Temporary pool in vicinity of Riacho do Barro, Ibiaí, in floodplain of Río São Francisco, Minas Gerais State, Brazil. Holotype: MZUSP 61234. Paratypes: MZUSP 61235 (1); UFRJ 5110-13 (3, 2, 3, 4). Also appeared as new with description in Costa & Nielsen 2001:8 [ref. 26580]; earliest not determined. •Valid as Simpsonichthys rufus Costa, Nielsen & de Luca 2001 -- (Costa in Reis et al. 2003:542 [ref. 27061], Costa & Brasil 2004:2 [ref. 28012] with authors as Costa & Nielsen, Costa 2005:63 [ref. 28575], Costa 2006:17 [ref. 28620], Costa 2007:59 [ref. 29445]). •Valid as Hypsolebias rufus (Costa, Nielsen & de Luca 2001) -- (based on generic placement in Costa 2011 [ref. 31654]). Current status: Valid as Hypsolebias rufus (Costa, Nielsen & de Luca 2001). Rivulidae: Cynolebiinae. Distribution: Middle São Francisco River basin, Minas Gerais State, Brazil. Habitat: freshwater.