The spiny dogfish is actually a species of small sharks that swim in schools as large as hundreds or thousands of sharks of the same gender and size. Below are more interesting facts about spiny dogfish.
Spiny Dogfish Facts
Spiny Dogfish Description: The basic color of the shark is grey, with a brownish top and white spots on its ventral side. On average, their length is 75-105cm (30 to 40inches), but can sometimes grow up to 130cm and weigh 9kg (20lbs). The two dorsal fins, the first larger than the second, have spines at their base. The upper lobe of the caudal fin is larger and the fin is asymmetrical. Both jaws have smooth edged, oblique teeth.
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