Common diseases of goldfish and their prevention: \x0d\ 1, fish plague. Fish plague is a disease of goldfish in spring. Due to the lack of exercise and insufficient light in winter, goldfish often suffer from physical weakness and listlessness. In Huangmei season, its symptom is dyspnea, which can lead to the death of goldfish in severe cases. \x0d\ Prevention and treatment methods: There is no specific medicine for fish plague at present, but only prevention. Every year, in the spring season, you should always bask in the sun for goldfish to enhance your physique. If the goldfish has a fish plague, it should be isolated or eliminated as soon as possible. \x0d\ 2, rotten skin disease. This is a common disease of goldfish, which is mainly popular in summer and autumn. The affected part of goldfish is red and swollen, and the epidermis is rotten, like a red mark, which mostly appears on both sides of goldfish abdomen. Generally speaking, fish will be infected with bacteria after being injured. \x0d\ Treatment method: Brush with disinfectant (such as mercuric chloride or high-concentration potassium permanganate solution) to scrub or smear the affected area, every other day 1 time, and cure for 3-4 times.