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Squalidae
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Squalidae is the family of dogfish sharks. They are found in the Atlantic, Pacific, and Indian oceans, from tropical equatorial climates to the Arctic and Antarctic.
Dogfishes are small to medium sharks, ranging from to in adult body length. They have two dorsal fins, each with smooth spines, but have no anal fin. Their skin is generally rough to the touch.
These sharks are characterized by teeth in upper and lower jaws similar in size; caudal peduncle with lateral keels; upper precaudal pit usually present; and a caudal fin without subterminal notch.
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Encyclopedia
Squalidae is the family of dogfish sharks. They are found in the Atlantic, Pacific, and Indian oceans, from tropical equatorial climates to the Arctic and Antarctic.
Dogfishes are small to medium sharks, ranging from to in adult body length. They have two dorsal fins, each with smooth spines, but have no anal fin. Their skin is generally rough to the touch.
These sharks are characterized by teeth in upper and lower jaws similar in size; caudal peduncle with lateral keels; upper precaudal pit usually present; and a caudal fin without subterminal notch.
Genera
There are twenty eight known species of dogfish shark, grouped into two genera:
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