The large pelvic fins originate beneath the disc and have convex trailing margins. Adult males have very short and thick claspers. The broad and flattened tail is shorter than the disc and bears a fold of skin along either side. There are two small dorsal fins, both with rounded to angular apices; the first is slightly smaller than the second, and its position varies from over to behind the pelvic fins. The caudal fin is triangular with rounded corners, and is roughly symmetrical above and below. The skin is soft and entirely devoid of dermal denticles.