Sturgeon is an ancient fish, which originated 130 million years ago. There are about 28 species in the world, and there are 8 species in China. Among them, the only ones with realistic fishing value are Amur sturgeon and bighead carp in Heilongjiang. The scientific name of the mandarin fish, Dasey, is a kind of sturgeon, which only exists in the Heilongjiang River, the border river between China and Russia. Chinese sturgeon is a kind of sturgeon.