The roughskin spurdog (Cirrhigaleus asper) is a dogfish of the family Squalidae, found circumglobally between latitudes 35°N and 35°S, at depths of between 200m (700feet) and 600m (2,000feet). It reaches a length of 1.2m (03.9feet).
The roughskin spurdog is ovoviviparous with 21 to 22 young in a litter.
The roughskin spurdog was first described in 1973 as Squalas Asper by British ichthyologist Nigel Merrett. It was later quickly changed to Cirrhigaleus asper.[1] The roughskin spurdog is also known as the roughskin dogfish and roughskin dogshark in English.