The fish in the pond is about 75 degrees, head down and tail up! !

Your pond should be caused by lack of oxygen. If you look at four, it is not one of the following reasons. For silver carp, it is basically hypoxia. Because he has the lowest oxygen tolerance (among the fish you pointed out)

1. Precipitation weather: there is strong sunshine during the day, but there are thunderstorms around the evening, or there is no sunshine in rainy days;

Second, sultry weather: it thunders for a long time without rain, and the wind is small. It is sultry for several days, and the weather turns cloudy after a long sunny day;

3. Windy weather: The weather is sunny during the day and the temperature is high. At night, the south wind turns to the north wind, and the temperature drops rapidly. This kind of weather is more common in autumn.

Fourth, you consume too much oxygen in the pond. Because almost no oxygen is produced at night, the aquatic animals in it consume oxygen, and some chemical reactions also need oxygen. There are not many fish left.

In order to prevent fish from floating and flooding the pond, we should pay attention to watching (listening to) the weather forecast in production, master the weather change information, and take corresponding management measures according to different types of bad weather.

1. In case of bad weather, we should strengthen the inspection of the pond at night so as to find the problem in time and deal with it quickly.

2. In case of bad weather, it is necessary to reduce the feeding amount appropriately, and try to feed in the morning to avoid feeding at night, so as not to aggravate the degree of hypoxia and floating head of fish.

3. There is a thunderstorm in the afternoon on a sunny day, and the weather is low-pressure and sultry. At noon, start the aerator to stir the water to increase oxygen, and at night, reduce the oxygen consumption coefficient of the pool water (don't be afraid of wasting electricity, the fish will feel distressed when they die).

4. If it rains for several days and the northwest wind blows suddenly at night, and the fish in the pond have serious hidden dangers of floating heads, it is necessary to turn on the machine to increase oxygen or inject fresh water with high oxygen content in front of the floating heads of the fish in the pond around midnight until the fish do not float heads in the daytime the next day.

5. In a pond with no aerator equipment and inconvenient water source, first prepare enough aerators, and once the fish in the pond float seriously, rescue them immediately.