According to records, the largest sturgeon ever seen can be as long as 7.5 meters and weigh over 1000 kg. From the evolutionary point of view, sturgeon is an ancient fish in the world. Its bones are mostly cartilage with residual notochord, but its phosphorus tail is a hard bone plate, which is called hard phosphorus in the inherent cartilage. The body shape is obviously different from other freshwater fish, but it has many similarities with marine sharks.

On May 24, 2009, Jiayin County, Yichun City, Heilongjiang Province, caught bighead carp from Heilongjiang Province. According to the measurement, this big herring is 6.68 meters long, with a maximum breast diameter of 0.8 meters and a weight of 978 Jin, which is very rare. Siniperca chuatsi, a kind of sturgeon, is a large carnivorous fish with a life span of more than 50 years. Now it only exists in Heilongjiang on the Sino-Russian border. Xinhua News Agency

Legend:

For thousands of years, a legend about "Lake Monster" has been circulating in Kanas Lake area of Xinjiang. Lake monsters are huge and unpredictable. They can swallow a calf in one gulp and often sneak on the lake to devour cattle and horses.

In recent years, it has been reported that local residents and tourists have witnessed this giant hucho fish. 1985, Xinjiang Daily published an eye-catching news on the front page: "Giant Dahongyu Found in Kanas Lake". In September this year, a large number of witnesses claimed to have seen this 15-meter-long Dahongyu.