Bythaelurus vivaldii, Vivaldi's catshark, is a species of shark belonging to the family Pentanchidae, the deepwater catsharks.

This catshark is found in Northwestern Indian Ocean, specifically in Somalia.

[2] It presumably lives in the depths of up to 628 m (2,060 ft).

[1][2] This small deep-water catshark has a long and broad head, a stout body, a shorter caudal fin, a larger interdorsal space, and a larger intergill length compared to all congeners living in Western Indian Ocean.

This shark-related article is a stub.