Loup de l'atlantique - Aquarium La Rochelle

Atlantic Wolffish

Anarhichas lupus
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Conservation status :

Not evaluated

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  • Group
    Actinopterygii
    Vertebrates
  • Size
    1 metre 20
  • Distribution area

    This fish can be found in the cold waters of the Northern Atlantic. To the east, its distribution extends from the British Isles to the Barents Sea (rare in the Bay of Biscay) and, to the west, from New Jersey to Labrador.

Behind
this character

This fish lives in waters with temperatures ranging from -1 to 14°C.

It is solitary by nature, hiding between rocks, but can also be found on shifting beds.

 

The wolffish's jaws are endowed with large canines that allow it to crush the molluscs, crustaceans and echinoderms (sea urchins and sea stars) that it eats.

 

After the mating season, the wolffish loses its teeth, growing new ones each year. The wolffish breeds in the fall, on seabeds 150 to 200 m deep. Unlike most fish, which release their reproductive cells directly into the water, wolffish must physically mate. Fertilization occurs inside the female and so is referred to as 'internal'.

 

The female lays 8,000 to 30,000 eggs measuring 5 cm in diameter, in a bulky, compact ball. The male defends and ventilates the clutch. When they hatch, the larvae are already fully formed, measuring up to 2.5 cm long. They live for a short time in the open water before dropping to the ocean floor to adopt an adult lifestyle. The Atlantic wolffish can reach sizes of up to 1.50 m.

 

Its meat is highly prized, leading to attempts at breeding conducted in Canada, Iceland and Norway.

« The Atlantic wolffish produces antifreeze proteins that allow it to tolerate low temperatures.
Those biomolecules are also used in the medical, pharmaceutical and food industries. »

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