SIZE:
Up to 130 cm.
LIFE EXPECTANCY:
Over 20 years.
LIFE CYCLE:
Sexual maturity is around 6 to 8 years for males and 14 to 16 years for females.
Spawning takes place between mid-December and mid-April. Females lay between 60,000 and 80,000 eggs. Once fertilized, they develop for 50 days before hatching. The young halibut then drift on the high seas for four months before settling to the sea bottom and beginning their transformation.
During its metamorphosis, the halibut loses its symmetrical shape, which is similar to that of most fish, to acquire its very distinctive flatfish shape. Its left eye migrates to the other side of its head. The halibut’s position also changes, i.e. it lies on its left side instead of remaining straight and vertical.