attenuatus, Cynolebias Costa [W. J. E. M.] 2001:375, Figs. 28-29 [Ichthyological Exploration of Freshwaters v. 12 (no. 4); ref. 25719] Temporary pool, 12 kilometers west of Bom Jesus da Lapa, about 13°15'S, 43°40'W, Bahia, Brazil. Holotype: MZUSP 62566. Paratypes: MZUSP 62567 (1); UFRJ 4778 (6), 4779 (2 c&s), 5143 (8, c&s). Plus additional non-type material. •Valid as Cynolebias attenuatus Costa 2001 -- (Costa in Reis et al. 2003:529 [ref. 27061], Costa 2009:146 [ref. 30511], Costa 2014:80 [ref. 33510], Silva et al. 2020:13 [ref. 37809]). Current status: Valid as Cynolebias attenuatus Costa 2001. Rivulidae: Cynolebiinae. Distribution: South America: middle São Francisco River basin (Brazil). Habitat: freshwater.