Ornate dogfish

Ornate dogfish
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Squaliformes
Family:	Etmopteridae
Genus:	Centroscyllium
Species:	C. ornatum
Binomial name
Centroscyllium ornatum (Alcock, 1889)
Range of ornate dogfish (in blue)

The ornate dogfish (Centroscyllium ornatum) is dogfish shark which is not widely known. It is found in deepwater on the continental slopes of the Indian Ocean, the Arabian Sea and the Bay of Bengal, at depths between 520 and 1,260 m. Its length is up to 30 cm, and its reproduction is ovoviviparous.

Field marks

No anal fin, grooved dorsal fin spines, teeth with narrow cusps and cusplets in upper and lower jaws, uniform dark coloration. Short abdomen and short caudal peduncle, close-set denticles on body.

Diagnostic features

Body moderately stout and compressed, preoral snout moderately long, about half of distance from mouth to pectoral origens; mouth narrowly arched, nearly half as high as wide. Second dorsal fin somewhat larger than first; pectoral apices when laid back ending about opposite to first dorsal spine origen. Caudal peduncle moderately long, distance from second dorsal insertion to upper caudal origen about as long as distance from eye to third gill slits. Lateral trunk denticles close-set, conical and with hooked cusps. Colour blackish, without white fin tips or prominent black markings on underside of body and sides of tail. Size moderate, adults about 50 cm.

References

• Froese, Rainer; Pauly, Daniel (eds.). "Centroscyllium ornatum". FishBase. June 2006 version.
• http://species-identification.org/species.php?species_group=sharks&id=167