Introduction to Hormone-Induced Spawning of Fish

The demand for fish for food, recreation, and ornamental aquariums is steadily increasing. Natural fish populations have declined during the last several decades because of environmental degradation and over-fishing. This has resulted in an increased effort in the development of techniques for hatchery production of fish. Traditional aquaculture species such as trout, catfish, common carp, golden shiner, and goldfish reach sexual maturity and spawn in hatcheries or ponds, when conditions are appropriate.