2. The shad is a warm water fish, and its appetite is strong when the water temperature is 15℃ to 30℃. When the water temperature is higher than 3 1℃, the appetite decreases. But when the water temperature is lower than 14℃, it will gather in the deep water area with less activity. Stop eating when the water temperature is lower than 13℃. When it is below 7℃, it cannot survive. Because of the poor cold resistance of shad, shad are usually placed in a deep pool sheltered from the wind and sun when wintering in the Pearl River Delta pond, and sometimes additional cold protection measures are needed.