The roughskin spurdog (Cirrhigaleus asper) is a dogfish of the familySqualidae, found circumglobally between latitudes 35°N and 35°S, at depths of between 200 metres (660 ft) and 600 metres (2,000 ft). It reaches a length of 1.2 metres (3.9 ft).
The roughskin spurdog is ovoviviparous with 21 to 22 young in a litter.
Taxonomy
The roughskin spurdog was first described in 1973 as Squalas Asper by British ichthyologistNigel Merrett. It was later quickly changed to Cirrhigaleus asper.[2] The roughskin spurdog is also known as the roughskin dogfish and roughskin dogshark in English.[3]