Spiny dogfish
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The spiny dogfish, spurdog, mud shark, or piked dogfish is one of the best known species of the Squalidae family of sharks, which is part of the Squaliformes order.
Squalus acanthias stellwagen
Spiny dogfish pup
Head
Jaws
Pacific spiny dogfish
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The Pacific spiny dogfish is a common species of the Squalidae family of sharks and are among the most abundant species of sharks in the world. This species is closely related to the Spiny dogfish and
Spiny dogfish
…especially in temperate waters. Those in the northern Pacific Ocean were reevaluated in 2010 and found to constitute a separate species, now called the Pacific spiny dogfish (Squalus suckleyi). The spiny dogfish has dorsal fins, no anal fin, and white spots along its back. The caudal fin has asymmetrical lobes, forming a heterocercal tail…
Spiny dogfish
Closeup of a female at the Monterey Bay Aquarium
Pacific spiny dogfish's venomous fin
A large catch of Pacific spiny dogfish