Heilongjiang carp is a demersal fish, and it is active in the lower layer of the water body. The water quality is generally slightly turbid, but it is also more suitable for clear water. It has strong adaptability and can withstand slightly harsh environments. In the middle of the river, it migrates to deep water for overwintering; in spring, it goes upstream for reproduction, enters the floodwater area and lakes for spawning migration, and then grows in these places.
Heilongjiang carp is an omnivorous fish that feeds on higher plants and their seeds, chironomid larvae, snails, insect larvae and zooplankton. The food composition varies with individuals and seasons. Generally speaking, animal food is the main food for the length of less than 20 cm, and the plant food is the main food for adult fish. In autumn, the appearance rate of plant seeds in the intestines of Heilongjiang carp greatly increased.
