Facts about Atlantic Cod
- 09
Atlantic cod belong to the family Gadidae and are closely related to haddock, pollock, and whiting, forming a commercially dominant group across the North Atlantic.
- 08
Cod caught in the North Atlantic have shown a consistent decline in average body size of approximately 2 centimeters per decade since the 1980s due to intensive commercial fishing pressure.
- 07
Liver tissue in Atlantic cod comprises up to 11 percent of their body weight and stores oils rich in vitamin A, historically making cod liver oil a crucial nutritional supplement for human populations across Northern Europe and North America.
- 06
Swim bladders in Atlantic cod lack a pneumatic duct, forcing them to rely entirely on gas secretion from specialized tissues to maintain buoyancy at depths exceeding 200 meters.
- 05
Populations of Atlantic cod off Norway and Iceland migrate over 2,000 kilometers annually to spawning grounds in the Barents Sea, one of the longest migrations among gadiform fish species.
- 04
A single Atlantic cod can consume approximately 100 smaller fish daily during peak feeding season, making them voracious predators that regulate populations of capelin and sand eels across the North Atlantic.
- 03
Otoliths in Atlantic cod ears contain annual growth rings that scientists use to determine age, with some individuals reaching 25 years old in the wild.
- 02
The Grand Banks off Newfoundland historically supported Atlantic cod populations so dense that 16th-century explorers reported fish thick enough to slow their ships.
- 01
Female Atlantic cod can produce between 4 and 5 million eggs annually, making them extraordinarily prolific reproducers among North Atlantic fish species.