The weather suddenly dropped from a dozen degrees to five degrees below zero. How about fishing?

Some research results show that the 24-hour (day and night) temperature difference exceeds 10 degrees, and it is difficult to fish whether it is heating up or cooling down. The reason is that fish is a kind of temperature-changing animal. Some tests show that the difference between fish's body temperature and water temperature is about 3 degrees. If the temperature difference between the fish's body temperature and the water temperature exceeds 3 degrees, the fish should adjust its body temperature to suit the water temperature. Otherwise, you will feel uncomfortable. Water temperature is affected by temperature. When the temperature changes sharply, the water temperature will also change sharply, from 10 degrees to 0-5 degrees, with a temperature difference of nearly 20 degrees. It is difficult for fish to adapt to this change and adjust their body temperature in a short time. If you desperately want to adjust your body temperature to adapt to the change of water temperature, you will feel extremely uncomfortable and will not eat. So it is difficult to fish in weather conditions like the title.