What are the anadromous fish species in the Yangtze River?

The Chinese sturgeon is a famous upstream migration spawning fish in my country. Chinese sturgeons are distributed in the Yellow River, East China Sea and South China Sea in my country, especially near the mouth of the Yangtze River. From April to June every year, it enters the river from the ocean for anadromous reproductive migration. From September to November, they reach the upper reaches of the Yangtze River to lay eggs. After spawning, the parent fish descends into the river and into the sea; the young fish live in the shallow waters of the river and enter the estuary area from June to July of the following year and go out to sea to grow.

Anchovy is also a famous anadromous spawning and migratory fish in my country. It usually inhabits the Yellow Sea, East China Sea and South China Sea. They spend most of their time in the ocean. When they reach sexual maturity at age 3-4, they undergo anadromous reproductive migration in late spring and early summer, entering the Yangtze River, Qiantang River, Pearl River and other water systems to spawn and reproduce. After laying eggs, they return to the ocean for fattening. The shad entering the Pearl River can reach the Guiping area along the Xijiang River; the shad entering the Qiantang River can reach as far as Quzhou before the dam is built, but can only reach below Qililong after the dam is built; the shad entering the Yangtze River can reach as far as Yichang, but mainly enters Jiangxi The middle reaches of Ganjiang River. After growing in the river for a period of time, the juvenile shad flow downstream into the sea at the turn of autumn and winter that year.

Carps also have the phenomenon of upstream migration. It usually inhabits shallow seas and river estuaries, and enters fresh water in spring and summer. For example, the phoenix bream arrives in freshwater areas of rivers to lay eggs in June and July, while the sword bream can be traced back as far as Dongting Lake. Intermaxillary whitebait usually lives in freshwater areas along the coast and in large river estuaries. It enters rivers for reproductive migration in late March and lays eggs in the lower reaches of rivers in mid-April. The fertilized eggs follow the rivers to the sea to develop and grow. The next year they came to the lower reaches of the river to lay eggs. There are different ecological groups of ayu. Some groups live in freshwater all their lives and are land-locked. And some are anadromous fish. Adult fish lay eggs in freshwater rivers and grow on bait in the river. They arrive at the spawning ground in August to September. The parent fish usually die after reproduction.

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