1. Reason: Goldfish suffering from water mold may be caused by poor water quality. Although they do not require high water quality, they are easy to be infected with water mold and mold when they grow in poor environment for a long time. Especially when they are sick or the water temperature is low, their resistance decreases, and they are more likely to suffer from water mold.

2. Treatment: Breeders need to isolate goldfish immediately to prevent them from transmitting water mold to other fish. Then use 2ppm potassium permanganate to give goldfish a medicated bath once a day for 20-30 minutes each time. You can also use iodine disinfectant to give goldfish a medicated bath, which can be cured after a few days.

1. Reason: Goldfish suffering from water mold may also be infected with water mold after trauma. When goldfish is injured, its resistance will decline, and water mold and mold will take advantage of it. It is difficult for breeders to find water mold in the early stage. When breeders find that white hyphae appear in their fish, it is already more serious. At this time, if they can't be treated in time, it is very likely that they will die.

2. Treatment: To treat goldfish with water mold, it is necessary to isolate it first, because water mold is contagious and easily infects other fish. Secondly, we should use sterilization drugs to treat them. The effective drugs for water mold are oxytetracycline, sulfadiazine, baking soda, povidone iodine and so on. If the water mold is serious, the breeder can directly feed them with these drugs.