Western longnose spurdog (Squalus nasutus) fish species and information / pictures of Western longnose spurdog - Squalus nasutus

Western longnose spurdog (Squalus nasutus) fish species information

Scientific Name
Squalus nasutus

Common Name
Western longnose spurdog

Biology
Occurs on or near the bottom of the upper continental slope at 298-850 m; viviparous with yolk-sac dependency; no reproductive and diet data are available, however, it is presumed that the species feeds on small fishes, cephalopods, and crustaceans. Trawled mainly in 300-400 m. Marketed for its meat, fins, and liver oil which is of high value.

Classification

Classified By

Last, Marshall & White, 2007

Class

Sharks and Rays (Elasmobranchii)

Order

Bramble, Sleeper and Dogfish sharks (Squaliformes)

Family

Dogfish sharks (Squalidae)

Distribution

Region

Eastern Indian Ocean

Distribution

Eastern Indian Ocean: Western Australia. Probably extending to Westerm Pacific, the Philippines and Indonesia.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

300 m

Depth To - meters

850 m

Zone

pelagic-oceanic

Environment

Marine; pelagic-oceanic; depth range 300 - 850 m , usually 300 - 400 m

Trophic Level

4.2 s.e. 0.63 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

49.9 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Moderate to high vulnerability (50 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Data deficient (DD)