There are plenty of animal resources in marine life, including1.50,000 ~ 40,000 species of fish, more than 20,000 species of crustaceans such as prawns, and more than 80,000 species of shellfish, whales, sea cucumbers, seals, walruses and seabirds, which constitute a vibrant marine world. In mariculture, fish is the main body of aquatic products and occupies the most important position. At present, more than 90% of the aquatic products caught from the ocean in the world are fish, and the rest are cetaceans, crustaceans and mollusks. There are many kinds of fish, including 1, 500 kinds of edible fish. Fish is a good health care product with high nutritional value and delicious taste. Regular consumption can strengthen the brain and improve intelligence.