Sturgeon is the Cretaceous period preserved one of the paleontological groups, once with the dinosaurs on earth *** with life. Because of its primitive and simple appearance of 200 million years almost unchanged, so there is water "living fossil" called. The sturgeon is a kind of sturgeon. 1998, the United Nations Washington Convention will be the world's wild sturgeon recognized as endangered animals, included in the Convention on International Trade in Endangered Species of Wild Fauna and Flora

Sturgeon for the ancient fish, originating in 130 million years ago, the world's existing about 28 species, there are eight species in our country, which has economic significance and the reality of the value of fishing for only the Heilongjiang Shi's sturgeon and the dachshund sturgeon.

Shi's sturgeon: the local name of the seven grain floater, sturgeon, once known as the Heilongjiang sturgeon. The body is long and scale-less, with a brownish-gray or brown back and a silvery-white belly. Habitat life in the river, swimming in the bottom of the water body, to aquatic insect larvae, benthic and small fish for food. Spawning period in May-June. It is very long-lived, and individuals over 40 years old have been found; sexual maturity is late, generally 9-10 years for females and 7-8 years for males. Heilongjiang from the upper reaches to the lower reaches, Ussuri River, Songhua River lower reaches are distributed, China's territory to the middle reaches of the Heilongjiang River is the largest number.

Koelung: local name koelung, once used the name dashi koelung, Heilongjiang koelung. Individuals are very large, one of the largest freshwater fish, large individuals up to 3.9 meters long, weighing 500 kilograms, the largest weighs 1,000 kilograms. Lifelong life in freshwater, in the river water does not migrate long distances, the Department of benthic fish. Calendar year May-June is its spawning and breeding activities of the main season, for carnivorous ferocious fish, life long, can live more than 50 years, the minimum age of sexual maturity female for 16-17 years old, males for more than 12 years old.

Shi sturgeon and sturgeon for the Heilongjiang waters of the valuable economic fish. The sturgeon meat flavor is delicious, the whole body is a treasure. Sturgeon eggs and sturgeon eggs are used to make caviar, nutritious, expensive, internationally known as "black soft gold". Sturgeon, is the famous product of Heilongjiang, weight up to several hundred pounds to a thousand pounds, the king of freshwater fish known as. In the past is to the emperor tribute. This fish meat is fresh and flavorful, bone crisp and fragrant, almost no waste of the whole body, stomach, lip, bone, swim bladder, seeds are cooking dishes of superior raw materials.

The sturgeon is a group of ancient cartilaginous fish in Heilongjiang, from the Lower Jurassic period to the present has been 200 million years of reproduction history, the world's endangered species of extinct species of the second class of protected animals, known as the "living fossil". By scientists on the classification of wildlife, the sturgeon according to biological characteristics into sturgeon and koeluga. Heilongjiang sturgeon scientific name "Shi's sturgeon", sturgeon scientific name "Dachshund sturgeon", collectively known as the Heilongjiang sturgeon.

It is said that as early as the Qianlong period, sturgeon because of the delicate meat and was used as tribute, but has not been named. The end of the Qing dynasty in the Guangxu period, Fuyuan Dabin tribute to Beijing, the Empress Dowager Cixi see its body Pang, eat its flavor and asked: "This is why the fish?" That bin replied: "no name, please give a name." Empress Dowager Cixi said: "This fish is so robust, really is the king of the fish, called the "king fish" it." Later people called it "sturgeon".