How do fisheries renew themselves?

Question

How do fisheries renew themselves?

Fish swim in from other areas.
The fish at lower depths swim up to the surface.
New fish are born, replacing those that are caught.
Humans deposit fish back into the ocean.

Answer 1

Fisheries renew themselves through natural processes such as migration, spawning, and recruitment. Fish may migrate into the area from surrounding waters, either to feed or to spawn. Spawning occurs when fish lay eggs or release sperm into the water, which eventually hatch into new fish. Recruitment refers to the successful survival of juvenile fish into the fishery population. As older fish are caught, there is room and resources available for new fish to enter the population and begin to grow, perpetuating the fishery. It is important for fishery managers to monitor and regulate fishing practices to ensure that the fishery is sustainable and able to renew itself over time.