Ecological distribution of dace

Mud carp is a warm water fish. when the water temperature is 15-30 degrees, the mud carp have a strong appetite. When the water temperature is higher than 31 degrees, the mud carp lose their appetite; when the water temperature is below 14 degrees, the mud carps gather in the deep water area; when the water temperature is below 13 degrees, they stop feeding; when the water temperature is below 7 degrees, they cannot survive. Due to the poor cold resistance of mud carp, overwintering mud carp cultured in ponds in the Pearl River Delta are usually kept in deep ponds sheltered from the wind and sunny, and sometimes cold protection measures are needed. In the wild fish ponds in the mountains of northern Guangdong, it is difficult for mud carp to survive the winter naturally.

Mud carp is a bottom fish, which requires low dissolved oxygen and can adapt to fertile water bodies. When the water temperature is 20-28 degrees, the dissolved oxygen is less than 1 mg / L, the mud carp can eat normally; the dissolved oxygen is as low as 0.24 mg / L, there is no suffocation. Therefore, mud carp can be stocked on a high scale, with about 1000 mud carps per 15 hectares.