Matilebias Alonso [F.], Terán [G. E.], Alanís [W. S. S.], Calviño [P.], Montes [M. M.], García [I. D.], Barneche [J. A.], Almirón [A.], Ciotek [L.], Giorgis [P.] & Casciotta [J.] 2023:9 Masc. Cynolebias alexandri Castello & López 1974. Type by original designation. •Synonym of Austrolebias Costa 1998, but a valid subgenus as described. Current status: Synonym of Austrolebias Costa 1998. Rivulidae: Cynolebiinae.