The Arrowhead Dogfish is a deep-water dogfish that has a widespread range and can be found at depths between 205 – 1800 m in large schools.
Biology and Behaviour
Depending on which area of the ocean the arrowhead dogfish is from, the depth range of this species varies. In the Northwest Atlantic, they occur at 412 – 617 m deep, meanwhile off the coast of the Canary Islands, they have been caught between 600 to 1,500 m deep.
Arrowhead dogfish have a long pointed snout, and a long, low first dorsal fin and a sub caudal keel on the underside of their caudal peduncle. They are brownish-grey or dark grey in colour.
They mainly feed on bony fish, squids and crustaceans.
Reproduction and Lifespan
Arrowhead dogfish are ovoviviparous with a litter size from five to seven pups. A pup’s size at birth is over 31 cm long. Females mature at 65 to 79 cm, and the maximum length reported was 104 cm long.
Conservation and Tourism
The IUCN lists arrowhead dogfish as least concern and there are no conservation methods currently in place.
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