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Sea fish of Kamchatka

Pacific cod

Throughout its habitat, the pacific cod is particularly often observed in the Kamchatka coastal water. Maximum occurrence is observed in the waters with temperature from zero to 4 ?С, which accounts for frank seasonal bathymetrical distribution, with migrations along the coast being limited. The pacific cod is a big and fast growing fish. Its length may reach 115-120 cm, and weight – 18-20 kg, the biggest specimen are commonly met near South-East Kamchatka. The catch mainly contains specimens 50-80 cm long, weighing 2-5 kg.
The maximum registered age is 15 years. The major mart of nearly 50% of the catch is composed of specimens at the age of 3-6 years, the fish older than 8 years occurs quite rarely. The pacific cod reaches pubescence at the age of 6 years, when it is 70 cm long.
Spawning takes place in winter and spring: January-May, the climax is reached in February-April. Spawning period dates shift to the spring (March-April) in western part of the Bering Sea and north-west of Kamchatka coast. For reproduction, the pacific cod runs from the coast to the upper part of the mainland slope, where it gathers to form pre-spawning and spawning colonies. A big pacific cod is an active predator eating intensively walleye pollock, herring, capelin and squid, though it may also prey upon bottom invertebrates (crabs, shrimps, worms).