Carp is a common freshwater fish in China. It is very big and has strong adaptability. It can not only tolerate hypoxia, but also survive in cold waters. However, its growth is related to temperature, once the temperature is too low, it will swim to the depths of the water into a semi-dormant state, during which it hardly eats.
Crucian Carp is also a very widely distributed fish in China, which can be seen in other major river systems except the Qinghai-Tibet Plateau. As an omnivorous fish, it not only has a wide range of feeding habits, but also has strong adaptability. In addition, it does not require high temperature. It can live in an environment of 4-32 C and can be fed in waters with low dissolved oxygen.
Aristichthys nobilis Aristichthys nobilis is also called silver carp, or fat head fish. It is called the four major Chinese carps together with black carp, grass carp and silver carp. As a filter-feeding fish, it generally lives in the middle and upper layers of the water body and is widely distributed. Its own temperament is docile, and do not like to jump, is also one of the unique fish species in China.
Snakehead, whose scientific name is snakehead, is a ferocious carnivorous fish with high economic value. It lives at the bottom of the water and has a strong ability to adapt to dissolved oxygen and water temperature. Even in anoxic environment, it can breathe from the upper gill cavity to the water surface, and it can survive in the environment of 0-41 C.
