igneus, Simpsonichthys Costa [W. J. E. M.] 2000:10, Figs. 3-4 [Aquarium (Brasil) v. 3 (no. 25); ref. 25933] Temporary pool close to Igarité, 22 kilometers north of Igarité, 11°28'8.4"S, 43°17'13.4'W, São Francisco basin, Bahia, Brazil, elevation 433 meters. Holotype: MZUSP 56254. Paratypes: MCP 23669 (8); MZUSP 56255 (8); UFRJ 4857 (100), 4868-70 (18, 10, 62), 4872 (33), 4877 (14), 5190-93 (15, 6, 10, 10). •Valid as Simpsonichthys igneus Costa 2000 -- (Costa 2003:43 [ref. 26768], Costa in Reis et al. 2003:541 [ref. 27061], Costa 2006:26 [ref. 28771], Costa 2006:17 [ref. 28620], Costa 2007:106 [ref. 29445]). •Valid as Hypsolebias igneus (Costa 2000) -- (Costa 2011:222 [ref. 31654], Costa et al. 2012:73 [ref. 31845], Costa et al. 2013:1 [ref. 32952], Britzke et al. 2016:134 [ref. 34461], Silva et al. 2020:14 [ref. 37809], Abrantes et al. 2023:549 [ref. 40706]). Current status: Valid as Hypsolebias igneus (Costa 2000). Rivulidae: Cynolebiinae. Distribution: South America: floodplains of the São Francisco River basin (Bahia State, Brazil). Habitat: freshwater.