Origin
The sea dog (Squalus acanthias) belongs to the order Squaliformes, family Squalidae. It is highly appreciated for its tasty meat, from the liver or prepare medicinal fish oil, which is rich in vitamin A. the risk of extinction of this species is low.
The sea dog (Squalus acanthias) is a small but very aggressive shark, also known as the spurfish. It lives in the cold waters of the Pacific and Atlantic Oceans, in the northern hemisphere. It prefers to sit on the bottom of coastal waters with low temperatures, around 15 M and at depths of 10-200 m.
In English it is called Piked dogfish.
The name of the spur fish comes from the fact that the dorsal fin has spines, which can cause very painful wounds.
Feeding the Sea Dog
Being a very greedy predatory fish, its food is very diverse, consisting of fish (mackerel, anchovies, herring, hake, horse mackerel, capelin, cod, gobies), Crustaceans (crabs, shrimp) and Mollusks (sea snails, calamari).
Features Sea Dog
As we have already said, dorsal fins have spines, which can cause very painful wounds. The ventral fins are large and much elongated, the anal one is small, and the cod fin has asymmetrical lobes, with the upper one larger than the lower one.
Viewed as a whole, the body of the sea dog is fusiform, reaches 1 m in length and can weigh about 9 kg. In exceptional cases the length of some specimens reaches 1.6 m. the male is always smaller than the female.
Its coloration is gray-brown with white spots on the dorsal side, respectively light gray with bright spots on the ventral side.
In this species the eyes are very large, oval in shape, and the color of the iris can vary greatly. The gill slits appear positioned on the sides, the snout is sharp and flattened, and the jaws are provided with small and very sharp teeth.
The shark is the fear of fish in almost all seas and oceans. The Shape of its head is so well adapted for attack that it easily disembarks water in pursuit of prey, moving like a real torpedo.
Shark fishing: the Sea Dog is a very skittish fish and moves away immediately at the approach of a speedboat.
It is rarely caught on a train, with deep gulls. It can be caught on land, from the anchored boat or from the shore in quiet areas with great depths near the shore. Favorite bait is blue mackerel or small octopuses.
Breeding Sea Dog
The mating season takes place in the winter months, and reproduction is ovoviviparous.
The female gives birth to 2-11 live cubs after a gestation of almost 2 years, which are at first 22-33 cm long and resemble adults very well.
The life expectancy in the sea dog is 25-30 years.
