Combtooth dogfish

Combtooth dogfish
Conservation status
Data Deficient (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Squaliformes
Family:	Dalatiidae
Genus:	Centroscyllium
Species:	C. nigrum
Binomial name
Centroscyllium nigrum Garman, 1899
Range of combtooth dogfish (in blue)

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The combtooth dogfish, Centroscyllium nigrum, is a little-known deepwater dogfish shark.

Physical description

The combtooth dogfish has no anal fin, grooved dorsal spines, two dorsal fins of about same size, pointed nose, large eyes, small gill slits, a short abdomen, short caudal peduncle, and is blackish-brown in color with white-tipped fins. It grows to a maximum of 50 cm.

Distribution

It is found in the Eastern Pacific and around Hawaii.

Habits and Habitat

It is an uncommon deepwater shark found close to the bottom between 400 and 1,145 m.

References

• Acuña (2004). Centroscyllium nigrum. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 12 May 2006. Database entry includes justification for why this species is listed as data deficient
• "Centroscyllium nigrum". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=160706. Retrieved 6 February 2006. 
• Froese, Rainer, and Daniel Pauly, eds. (2006). "Centroscyllium nigrum" in FishBase. 06 2006 version.
• FAO Species Catalogue Volume 4 Parts 1 and 2 Sharks of the World