Longnose spurdog (Squalus blainville)

Scientific name: Squalus blainville Risso, 1827

Longnose spurdog (Squalus blainville)

The Longnose spurdog (Squalus blainville) is a brackish-water fish of the family Squalidae. In the aquarium it needs water at 11–18°C (52–64°F).

Longnose spurdog care at a glance

Temperature
11–18°C (52–64°F)

Biology

Found on the continental shelves and upper slopes. Depth range from 16-440 m, and from 300-780m in the eastern Ionian Sea. Forms schools. Off West Africa, water temperature and salinity where this species is often found ranges from 11-18?C and 36 ppt. (at 16 to 255 m depth), respectively. Feeds on bony fishes, like denticids, mackerel and percichthyids, as well as crabs, lobsters, and octopi. Ovoviviparous, with 3 to 4 young per litter. Utilized fresh, dried salted and smoked for human consumption.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Squalus blainville
Family
Squalidae (Dogfish sharks)
Order
Squaliformes (Bramble, Sleeper and Dogfish sharks)
Class
Elasmobranchii (Sharks and Rays)
Maximum length
100.0
Depth range
16–780 m (52–2559 ft)
Environment
Marine; brackish; demersal; depth range 16 - 780 m
Climate
Subtropical
Distribution
Eastern Atlantic: Bay of Biscay to Mediterranean, Morocco, Senegal to Namibia (these records may include other species in addition to Squalus blainvillei). Although reported from the Canary Islands (e.g. ), it is most likely based on misidentifications of Squalus megalops. Western Pacific: southern Japan and Taiwan. Nominal records of Squalus blainvillei or Squalus fernandinus from the western Atlantic (North Carolina, USA to northern Gulf of Mexico; Argentina), Indian Ocean (South Africa, Mozambique, Madagascar, Tanzania and India) and the Pacific (Australia, New Zealand, New Caledonia, Hawaii and northern Chile), as well as some records from the northwest Pacific and eastern Atlantic are based at least in part on Squalus mitsukurii and possibly other species. Whether Squalus blainvillei itself is as wide-ranging as reported for blainvillei-group dogfishes (including Squalus mitsukuri
Conservation status (IUCN)
Data deficient (DD)
Threat to humans
Harmless
Uses
Fisheries: commercial
Resilience
Very Low, minimum population doubling time more than 14 years (K=0.10-0.14; Fec=3)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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