If there is extreme weather, will fish be killed by heat or freeze to death?

Whether it is fish or other animals, temperature has a great impact on their growth. Generally speaking, high temperatures are suitable for fish or other animals to grow and grow quickly, while low temperatures are not suitable for them to grow and it is difficult to grow at low temperatures. No matter what kind of animal it is, there is a temperature suitable for their growth. Is the water temperature really low?

If the water temperature is relatively low, will the fish freeze to death? For the types of fish mentioned above, we can definitely say no, because the water temperature is not so low that the fish cannot bear it, and they will not die of cold. Why does the water temperature feel low? Then why do we feel the water temperature is lower when we touch it with our hands? Because the temperature is relatively low, people think the water is very cold when the temperature drops. This is because our body temperature has not decreased, but the water temperature is actually not very high.

Under the premise that there is no ice, the temperature of the water surface is also 3-4 degrees. After the water surface freezes, the temperature of the bottom of the water is higher than that of the water surface. When we touch the water with our hands, we feel that the water temperature is low. Just because our skin temperature is relatively high, we feel that the water temperature is relatively low. Different water layers have different water temperatures, and water cooling means that the surface layer gradually cools down toward the bottom, and the low temperature on the water surface slowly penetrates deeper into the water. Because the temperature is not that cold, the process is slower. Even if the water surface freezes, the bottom will not freeze. The temperature at the bottom is relatively high, which is why many fish live in deep water. Body temperature of fish

Do fish have body temperature? Be able to say with certainty: "Yes". The body temperature of fish changes with the change of temperature. For example, when the water temperature is 20°, the body temperature of fish is probably slightly higher than the water temperature (0.5-1°). Since fish have basal metabolism, the body temperature and There is a slight difference in water temperature.

However, the water temperature in rivers or lakes varies from deep to shallow. Friends who have swum in natural sea areas know that in summer, the temperature of deep water is low and the temperature of shallow water is high. In winter, the temperature of deep water is high and the temperature of shallow water is high. Low, why is this? Since the water surface will be exposed to the sun in summer, the temperature of the surface layer will heat up quickly, while the temperature of the inner layer of water will rise more slowly, and the temperature of the bottom layer will rise more slowly, resulting in different water temperatures.

Fish are very adaptable to water temperature, such as grass carp, grass carp, crucian carp, grass carp, flat carp, etc. They can survive even if water temperatures vary widely. The metabolism of fish is very fast, and the growth rate is also rapid. When the temperature of the water is very different, or the temperature of the water is too high or too low, the metabolism of the fish will slow down, and it may even stop the Pisces from eating and growing. The speed will also slow down. For animals, summer and winter are very difficult days. In order to adapt to the cold and heat, animals learn to hibernate and migrate and store fat. Animals are all very smart and use different methods to adapt to the harsh cold and heat.