To which family of fish does the dogfish belong?
Spiny dogfish the quota with nearly being added. As a cartilaginous fish, shark tissues usually do not fossilize. Squalus acanthias fossils date back to the Miocene 11 MYA. Spiny dogfish The spiny dogfish, spurdog, mud shark, or piked dogfish ("Squalus acanthias") is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. While these common names may apply to several species, "Squalus acanthias" is distinguished by having two spines (one anterior to each dorsal fin) and lacks an anal fin. It is found mostly in shallow waters and further offshore in most
Cuban dogfish of each of its two dorsal fans. It probably feeds on bottom fishes and invertebrates. The isopod parasites which commonly infest the mouth and gills of marine fish are unusually large in the Cuban dogfish. Its reproduction is ovoviviparous, with 10 pups in a litter. It is not generally used for food, but taken commercially for the oil and vitamins extracted from its liver. Cuban dogfish The Cuban dogfish ("Squalus cubensis") is a dogfish, a member of the family Squalidae in the order Squaliformes. It is found in the Western Atlantic from North Carolina to Florida, in the Gulf of