A slender finback catshark that is characterized by the following: second dorsal-fin apex over anal fin with its origin slightly forward of the anal-fin origin; interdorsal distance subequal to head length; snout to cloaca length more than twice (2.1-2.3 times) interdorsal distance; lower labial furrow more than twice (2.7-3.7 times) length of upper furrow; anterior nasal flaps with a greatly enlarged posterior lobe; internarial space only slightly shorter than nostril width; dorsal margin of caudal fin about twice (1.9-2 times) length of second dorsal fin; height of second dorsal fin about twice (1.9-2.1 times) height of anal fin; dorsal surface and sides with a striking color pattern consisting of numerous dark spots and blotches, some equal or large than eye diameter; white spots on body absent; monospondylous centra 38-39; total centra 140-143 (Ref. 58071).