Life of Sea | Dogfish | Dogfish, name for a number of small sharks of different families. Best known are the spiny dogfishes (family Squalidae) and smooth dogfishes (family Triakidae). Barbed Dogfishes have two spines, one in front of each dorsal fin and anal fins lack. The common spiny or piked, dogfish (Squalus acanthus) is found in the oceans of the world and are very abundant in the shallow, temperate waters. Gray skin is speckled white. Females of this species can reach lengths of 4 ft. (120 cm) and weighing 15 to 20 lb (6.3 to 9 kg), smaller males.
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