Causes of floating heads of goldfish:

1. Weather reasons, it may be that the temperature difference between morning and evening is too large or the weather has been hot, causing goldfish to float;

2 , The reason for water quality may be that the owner did not change the water in time, which caused the water quality to deteriorate and caused this phenomenon;

3. Hypoxia, it may be that the owner raised the goldfish at too high a density, causing the goldfish to become hypoxic. ;

4. Low air pressure: In rainy or hot weather, the air pressure is low and goldfish will float. This condition does not require treatment and will recover once the air pressure increases.

5. Ammonia poisoning or hydrogen chloride poisoning: The gill filaments of goldfish are gradually eroded by chemicals and gradually lose their ability to exchange gases.

6. Nitrite seriously exceeds the standard: fish will have floating heads. Even if the aeration equipment is operated to maximum horsepower to increase oxygen, it cannot alleviate the phenomenon of fish floating heads. This situation is somewhat similar to human gas poisoning.

7. Parasite invasion: If there is an increase in mucus, it is more certain to be caused by surface parasites. If an entire tank of goldfish is infected with parasites, they will gather on the surface of the water and circle around the tank.

What to do if goldfish have floating heads:

If it is caused by parasites, it can be treated with a medicated bath or a 3% concentration of salt water or potassium permanganate solution. , you can also spray artemisinin or tartary buckwheat leaves in the whole tank or even take insecticides orally for insecticide treatment. If it is poisoning, emergency water changes must be performed and antidote drugs must be used. Generally speaking, vitamin C can play a certain detoxification and anti-stress role. Nitrite poisoning can be relieved by adding an appropriate amount of salt to the water, but this is only a temporary solution. The most fundamental solution is to improve the water change and the filtration system.