Western longnose spurdog

Western longnose spurdog
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Chondrichthyes
Order:Squaliformes
Family:Squalidae
Genus:Squalus
Species: S. nasutus
Binomial name
Squalus nasutus
Last, L. J. Marshall & W. T. White, 2007

The western longnose spurdog ( Squalus nasutus) is a dogfish of the family Squalidae, found on the continental shelf off the northwest and southwest coasts of Western Australia, at depths between 300 and 510 m. Its length is at least 55 cm.[2]

The western longnose is a rare, small and slender dogfish with a narrow head and long, narrow snout. A short medial barbel is on the anterior nasal flaps. The pectoral fin has a shallowly concave posterior margin. The first dorsal fin is moderately high with a short spine.[3]

Coloration is light grey above, paler below, with no white spots. The pale dorsal fins have dusky tips and posterior margins. A dark blotch is seen on part of the caudal fin's posterior margin.[3]

Its reproduction is ovoviviparous.

References

  1. ↑ Cavanagh, R.D. & Lisney, T.J. (2003). SSG Australia & Oceania Regional Workshop, March 2003. "Squalus nasutus". The IUCN Red List of Threatened Species. IUCN. 2003: e.T42726A10749140. doi:10.2305/IUCN.UK.2003.RLTS.T42726A10749140.en. Retrieved 27 December 2017.
  2. ↑ Froese, Rainer and Pauly, Daniel, eds. (2016). "Squalus nasutus" in FishBase. 10 2016 version.
  3. 1 2 Compagno, Dando, & Fowler, Sharks of the World, Princeton University Press, New Jersey 2005 ISBN 0-691-12072-2
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