8: 00 am in early May to 10. Perch is a warm-water fish, its critical survival temperature is about 65438 0 ~ 36℃, and its optimum survival temperature is about 20 ~ 30℃. When the water temperature is lower than 10℃ or higher than 35℃, it gradually stops feeding, and when the water temperature is higher than 14℃ and lower than 35℃, it can feed and grow normally. The best time to catch bass is in the early May of each year and in the morning around the long summer. At this time, the water temperature increased obviously, and the perch was very active, showing a state of feeding around the clock.