? The whole body of the fish seems to be wrapped in rice flour, which means that it has powdery mildew. The sick fish needs to be put into a tank of alkaline water, and it will soon recover. The disease is called egg dinoflagellate disease, and the early symptoms look very similar to white spot disease, but there are red blood spots between the white spots. Later, the fish will float on the surface of the water, and eventually the fish will become thin and black, and will stop feeding, the gills will rot, breathing will be difficult and die.
1. Change water regularly: The first thing to do to prevent powdery mildew is to change water regularly. Changing water can improve water quality. If the water is not changed for a long time, harmful bacteria in the water will breed, thus increasing the possibility of illness. Usually, the water needs to be changed once a week, only when the filtration is very good, it needs to be changed once a half month, one fifth of each time.
2. Control the water temperature: powdery mildew is usually easy to occur at 22-32 ℃, so in order to prevent the life of fish, it is necessary to control the temperature properly. It's more convenient for cold-water fish, because it can be fed at a lower temperature, but tropical fish can't, at least keep it above 20 degrees Celsius.
3. Supplement nutrition: Although lack of nutrition will not directly lead to this disease, adequate nutrition can also improve the disease resistance of fish. Usually, we should pay attention to feeding some animal live baits, so that the fish will grow well and the possibility of getting sick will be reduced.
