Spiny Dogfish

The Spiny dogfish is one of the most abundant species of shark in the world. It is found worldwide across the Atlantic, Pacific and Indian Oceans. It is a small sized shark with two spikes on its back, one in front of each dorsal fin. These spikes are mildly Poisonous.

This shark has got this name because of these spines. The scientific name of the shark is Squalus acanthias. Length of this compact shark species reaches a maximum of 39 inches in males and 49 inches in females.


Quick Facts: –

  • Although Spiny Dogfish are small in size, they are aggressive and they relentlessly pursue their prey.
  • This shark species is thought to be the most well-researched shark species in the world.
  • The gestation period of females can last up to two years which is the longest of any other vertebrate.
  • They produce a litter of between 2 and 15 spiny dogfish pups at once.
  • This carnivorous shark species feeds mainly on pelagic fish such as herring, menhaden, capelin, sand lance, and mackerel.
  • This species is one of the major predators of American lobster and large crabs.
  • The lifespan of this shark species can range between 25 to 80 years.
  • This shark is a major predator on some commercially important species such as herring, Atlantic mackerel and squid.
  • The skin of these sharks is covered with tooth-like scales, which are also called denticles.