Squalus
Squalus is a genus of sharks in the family Squalidae, commonly known as spiny dogfish or dogfish sharks. It is the type genus of its family, and the best-known species is the spiny dogfish, Squalus acanthias, which has a widespread distribution in temperate waters.
Members of Squalus are small to medium-sized sharks with elongated bodies, two dorsal fins each bearing a
Distribution and habitat: Squalus species occur worldwide in temperate and subtropical seas, mainly along continental shelves
Reproduction and life history: Most Squalus species are ovoviviparous, with embryos developing inside eggs retained within
Fisheries and conservation: Spiny dogfish are of commercial importance in many regions, particularly S. acanthias and