If the fish has white hair on its body, the first thing to do is to change the water for it. Because its long white hair is caused by fungi, too many bacteria in the water will lead to further deterioration of its condition, by changing water can improve water quality, which is very helpful for its recovery. Usually change every other day, if it is the same as before, the efficiency of water change is not as fast as the reproduction of fungi, so it is useless to change water.
Usually fish are easy to grow white hair when the temperature is low, because the low water temperature leads to the weak resistance of fish, which is more likely to be infected by pathogens. By warming up, it can stimulate the fish body, accelerate metabolism and improve its immunity, which is more conducive to its recovery.
Although warming is helpful to the fish, it will also accelerate the reproduction of bacteria. In order to prevent them from invading the fish, it is necessary to add a proper amount of salt to the water. The purpose of salting is to change the osmotic pressure of the water body, which can reduce the amount of water entering the fish body and avoid the invasion of pathogens.
If the fish's condition is serious, it needs to be given a medicated bath to recover. To prepare povidone iodine, 20 mg per liter of water can be added, or potassium permanganate can be used with salt water to soak fish for 20-30 minutes. In addition, some oral antibacterial drugs can also play a good therapeutic effect on fish.
