Why do you always hear fish farmers say that fish will die of heat? How can you die of heat in the water?

In order to make money, many people choose aquaculture. Although aquaculture is not easy to do, there are still many people who have been insisting on it for many reasons. Raising animals is a very difficult thing, because although many animals survived successfully in such difficult conditions in ancient times, they may not be able to stand it if you put them in their own environment. You can always hear fish farmers say that fish will die of heat? How can you die of heat in the water?

Many people choose to raise fish, because fish is a very good food animal, and it is rich in protein, so people love to raise fish. But when the high temperature strikes in summer, you will find that many fish in the fish pond are hot to death, which makes us very puzzled. Fish live in fish ponds and touch water every day. How could they die of heat? But in fact, contact with water is not cold, because with the continuous irradiation of sunlight, the temperature of water will continue to rise, thus becoming hot water. If a fish lives in this hot water, how can it not be killed by heat?

Besides the rising water temperature, there is also the problem of dissolved oxygen in fish pond water. Fish used to live in rivers or rivers, which is a very natural environment. Because people need to raise fish, they move the fish from the river to their own ponds. But although they all live in water, the water in the river is different from that in the fish pond. They are connected with the outside world like a big river, and they are by no means isolated small ponds. They can slowly go from one river to another, so that the river is constantly flowing and it can absorb more oxygen.

But the fish pond is different, because it is artificially cultivated, all its conditions need to be controlled manually, and there is no river circulating, so its water is very limited and there is no great fluidity, which will cause the oxygen in the water to be unable to be updated. On a hot day, the fish in the fish pond can't breathe fresh air and have to bask in the sun, so they naturally die.

Moreover, the sunshine is very strong in summer, and the fish pond is exposed to light, and the water inside slowly evaporates with the irradiation of high temperature. There are quite a lot of fish in artificial fish ponds. The more fish there are, the greater the competition for life nutrients. Their water volume is gradually decreasing, and the oxygen they need to breathe is also decreasing, so in summer, fish are easily killed by heat.