Spectrolebias Costa [W. J. E. M.] & Nielsen [D. T. B.] 1997:258 Masc. Spectrolebias semiocellatus Costa & Nielsen 1997. Type by original designation (also monotypic). •Synonym of Simpsonichthys Carvalho 1959, but a valid subgenus Spectrolebias -- (Costa 2006:17 [ref. 28620], Costa 2007:42 [ref. 29445], Costa & Brasil 2008:245 [ref. 29968], Costa 2010:1997 [ref. 30858]). •Valid as Spectrolebias Costa & Nielsen 1997 -- (Costa 1998:74 [ref. 23792], Lazara 2001:301 [ref. 25711], Costa in Reis et al. 2003:542 [ref. 27061], Costa 2004:2 [ref. 27874], Huber 2005:15 [ref. 28394], Nielsen 2013:81 [ref. 32696], Nielsen & Brousseau 2013:115 [ref. 32794], Costa 2014:25 [ref. 33309], Nielsen & Pillet 2015:180 [ref. 34009], Ponzetto et al. 2016:[7] [ref. 34144] as paraphyletic, Costa & Amorim 2018:359 [ref. 36019], Loureiro et al. 2018:8 [ref. 36240]). Current status: Valid as Spectrolebias Costa & Nielsen 1997. Rivulidae: Cynolebiinae.