Fig. 6 in Review of the family Rivulidae (Cyprinodontiformes, Aplocheiloidei) and a molecular and morphological phylogeny of the annual fish genus Austrolebias Costa 1998

Fig. 6. Dorsal and partial view of ventral gill arches of a. Papiliolebias bitteri, b. Cynopoecilus melanotaenia, c. Ophthalmolebias constanciae, d. Austrolebias juanlangi; b = basibranchial series, bh = basihyal, h = hypobranchial series. Scale bar = 1 mm.