If the fish has bubble disease, it is necessary to oxygenate the water and add salt properly at the same time. This disease is caused by gas saturation in water, which is usually encountered when raising fish with groundwater, because the nitrogen in water is saturated. After illness, bubbles of different sizes will appear on the body surface of fish, especially on the head, and at the same time, they will lose their balance. If you want treatment, you need to oxygenate the water, because the air is injected, which will let other gases escape.

1. Too many plants: Usually, fish get bubble disease because there are too many plants in water, whether algae or other aquatic plants, which produce oxygen during photosynthesis, which leads to supersaturation of oxygen in water. This situation can easily lead to fish getting sick.

2. Excessive fertilization: If fish are raised in fish ponds, fertilization is often needed to cultivate some plankton, but the amount of fertilization must be controlled well, and decomposed organic fertilizer should be selected. If it is unfermented fertilizer, oxygen will often be consumed to produce methane gas, which will lead to bubble disease.

3. Temperature rises: When the overall temperature rises, the dissolved oxygen in water will decrease instead. At this time, the originally unsaturated oxygen will gradually saturation, so the fish will also suffer from bubble disease, so it is best to control the temperature properly and not let it rise too high.