Kryptolebias Costa [W. J. E. M.] 2004:107 Masc. Fundulus brasiliensis Valenciennes 1821. Type by being a replacement name. Replacement name for Cryptolebias Costa 2004, preoccupied by Cryptolebias Gaudant 1978 in fossil fishes. •Valid as Kryptolebias Costa 2004 -- (Vermeulen & Hrbek 2005:1 [ref. 28142], Huber 2005:15 [ref. 28394], Costa 2006:6 [ref. 28624], Costa 2007:7 [ref. 29397], Scharpf 2007:10 [ref. 30398], Costa 2011:185 [ref. 31358], Huber 2012:17 [ref. 32947], Berbel-Filho et al. 2016:[1] [ref. 34830], Costa 2016:183 [ref. 34932], Loureiro et al. 2018:3 [ref. 36240]). Current status: Valid as Kryptolebias Costa 2004. Rivulidae: Kryptolebiatinae.