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Spurdog

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Scottish trip 2007 021 copy

Spur dog, Firth of Lorne

The Spurdog (Squalus acanthias) can grow to 130cm.

IdentificationEdit

The upper body is dark grey or black and white spots are usually present. The under-side is white. There are spines in front of both dorsal fins.

BreedingEdit

Aplacentally viviparous (live bearing). Litter size between 1-20 pups which are 20-30cm at birth. Females mature at 70-100cm. Males mature at 55-60cm.

HabitatEdit

Found within the upper layers down to depths of 900m. Mostly a mid-water and bottom schooling shark.

FoodEdit

Fish eater (Herring, Sprats, Pilchards, Garfish, Sand eels, Flatfish and Cod species) although known to take crustaceans and cephalopods (Squid).

RangeEdit

Both and inshore and offshore species preferring a temperature range of between 7 to 150C.

Additional Notes: Known to live longer than 40 years.

ReferencesEdit

The Aquarium Project

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