xavantei, Cynolebias Costa [W. J. E. M.], Lacerda [M. T. C.] & Tanizaki [K.] 1988:123, Figs. 1-8 [Revue française d'Aquariologie Herpétologie v. 14 (no. 4) [for 1987]; ref. 6372] Swamp near Porto Nacional, 10°43'S, 48°24'W, Goiás [now Tocantins] State, Brazil. Holotype: MZUSP 35418. Paratypes: MHNM 0000-2490 (1), 2491 (1); MNRJ 11299 (4); MZUSP 35419 (10); ZMA 119416 (2). Type catalog: Loureiro et al. 2016:413 [ref. 35150]. •Valid as Plesiolebias xavantei (Costa, Lacerda & Tanizaki 1988) -- (Costa 1991:378 [ref. 13611], Costa 1995:31 [ref. 22097], Costa 1995:73 [ref. 21612], Costa 1998:330 [ref. 23324], Costa 1998:81 [ref. 23792], Lazara 2001:257 [ref. 25711], Costa in Reis et al. 2003:533 [ref. 27061]). Current status: Valid as Plesiolebias xavantei (Costa, Lacerda & Tanizaki 1988). Rivulidae: Rivulinae. Distribution: Middle Tocantins River basin, Brazil. Habitat: freshwater.