Fenneropenaeus China is a large migratory shrimp with wide temperature, euryhaline and annual warm water. Male shrimp, commonly known as "yellow shrimp", is generally 155mm long and weighs 30-40g. Female shrimp, commonly known as "green shrimp", is generally 190mm long and weighs 75-85g. The body color is turquoise, the lining is purple, exquisite, and half a foot long, so it is also called prawn. I usually crawl on the bottom of the sea and sometimes swim in the water. Shrimp in Bohai Bay begins to migrate through the winter every year in late autumn and early winter, and overwinters in the deep sea area in the southeast of the Yellow Sea. In the spring of the following year, it went north to form spawning migration. In late April, they began to lay eggs, and the amount of eggs laid was 300- 1 10,000. Most female shrimps died after laying eggs. Eggs metamorphose several times and become young shrimps. Young shrimps molt for dozens of times in 18 days, and feed and grow near the estuary from June to July. After 5 months, it can grow into an adult shrimp of more than 65438±0.2cm, and it begins to migrate to the central Bohai Sea and the northern Yellow Sea in September, forming an autumn harvest fishing period. The fishing period is from mid-May to the end of 10, and the main fishing gear is trawl, anchor net and net gear. After autumn fishing, the fishing season is set after September.

The life history of China shrimp includes fertilized egg, embryonic stage, nauplii, flea larva, mysis larva, juvenile shrimp, juvenile shrimp and adult shrimp. Mature parent shrimps lay eggs in shallow coastal waters; The embryonic development stage is spent in the egg membrane; After hatching, nauplii, flea larvae and mysid shrimp larvae live in water. After larvae develop, they gradually change from planktonic life to benthic life and migrate to estuaries and shallow waters. Young shrimps live in coastal waters and estuaries, and gradually move to the offshore deep water area with their growth, and then swim to the coastal waters to lay eggs when they mature. China prawns have obvious seasonal migration habits. The young shrimps born in May and June are similar in body length and parent shrimp size in September and October, and the males mature and start mating at the end of1October. At this time, the water temperature in coastal areas decreased, and shrimp groups began to gather in the open sea. 1February, they gradually leave the Bohai Sea, pass along the coast of Shandong Peninsula, and reach the deep water area in the south of the Yellow Sea, which is called wintering migration. In February and March of the following spring, it began to migrate northward. The main group entered the Bohai Sea in March and April via the coast of Shandong Peninsula, and began to spawn and breed near the estuaries of Laizhou Bay, Bohai Bay and Liaodong Bay at the end of April and early May, which is called spawning migration.