The crying Izak (Holohalaelurus melanostigma) is a species of shark belonging to the family Pentanchidae, the deepwater catsharks. It is found in the western Indian Ocean off Mozambique and Tanzania, at depths of between . It can grow up to in length.
References
Compagno, Dando, & Fowler, Sharks of the World, Princeton University Press, New Jersey 2005