Roughskin spurdog

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 200 metres (660 ft) and 600 metres (2,000 ft). It reaches a length of 1.2 metres (3.9 ft).

Roughskin spurdog
Off the coast of South Carolina
Conservation status
Data Deficient  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Division:	Selachii
Order:	Squaliformes
Family:	Squalidae
Genus:	Cirrhigaleus
Species:	C. asper
Binomial name
Cirrhigaleus asper (Merrett, 1973)
Range of the roughskin spurdog (in blue)

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The roughskin spurdog is ovoviviparous with 21 to 22 young in a litter.

Taxonomy

The roughskin spurdog was first described in 1973 as Squalus asper by British ichthyologist Nigel 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]