1. What is the matter with hoarfrost on the fish? There is hoarfrost on the fish, which shows that it is water mold. This is a common disease, which is easy to suffer from when the temperature is low. There are many kinds of pathogenic bacteria, such as water mold, which usually invades from the wound of fish and slowly grows hyphae, that is, white flocs, which will not only affect the activities of fish, but also reduce their appetite, and endanger their lives after a long time, so it is necessary to treat them in time.
2. How to prevent fish water mold1. Change water regularly: To prevent water mold, the best way is to change water regularly. Usually, in the daily feeding process, the water should be changed every five to seven days. Each time, the water should not be changed too much, generally one quarter or one fifth, and no more than one third of the total amount at most, so as not to cause too much stimulation to the fish.
2. Keep the water temperature: As mentioned above, water mold is easy to suffer from when the temperature is low, so raising the water temperature can also help prevent the disease. Usually, the water temperature should be kept at about 20 ℃, and the temperature can be controlled by heating rods to avoid too low a temperature.
3. Avoid injury: Water mold will invade fish through wounds, so as long as it is not injured in daily feeding, it will generally not get sick. If fish fight, they must be isolated in time to avoid biting each other. If there are sharp objects in the cylinder, it is best to take them out.
