from hypoxia? If it is a short period of hypoxia, it is found in time, and it can recover after a few minutes of oxygenation. If the hypoxia lasts for a long time and there is a floating head phenomenon, it may take half an hour to an hour. But if there is already a performance of vertical swimming, it means that it is basically hopeless. If you want to avoid this situation, you can prepare an oxygen pump to oxygenate the fish tank all day.
? 1. High temperature: In many cases, fish lack oxygen is caused by high temperature. The rise of temperature means the decrease of dissolved oxygen, and the oxygen content in the water is less, so the fish will naturally lack oxygen. Therefore, in the high temperature season, it is best to oxygenate in time, do not easily cool the fish tank, temperature changes on the fish have a certain Hi Hi.
2. High density: fish farming must pay attention to the density, too much or too small fish tank, oxygen consumption is not as fast as the increase, fish will also lack oxygen. In view of this situation, in addition to timely oxygenation, you can also change a larger fish tank, or raise a few less fish.
3. Too fertile water: If the water body is eutrophic, there are more microorganisms in the water, which will also lead to rapid consumption of oxygen, resulting in anoxia of fish. In order to prevent this from happening, we need to change water regularly and reduce feeding at ordinary times. With less food and excretion, water is not easy to become fat.
