1. Reason: Red spots on goldfish may be caused by hemorrhagic disease, which is mainly caused by bacterial infection, external injury or excessive ammonia and nitrogen in water. The early symptoms of hemorrhagic disease are not obvious, and in the middle stage, sporadic white spots will appear on the body. But in the later stage, there will be more and more bleeding sites.

2, Solution: Breeders need to move them to a sunny place first, which can inhibit the growth of bacteria in water. If you can't receive enough sunshine, it's best for the breeder to install a sterilization ultraviolet lamp, which can also sterilize. If the bleeding is serious, the breeder also needs to use furazolidone or potassium permanganate medicated bath.

1. Reason: Red spots on goldfish may also be erythema, and small red spots will appear on fish in the early stage of erythema. At this time, the illness is not serious, and the breeder can easily recover as long as he treats it in time. But in the later stage, red spots will spread all over the body, and suppuration may occur.

2, Solution: If the situation is not serious, breeders only need to add some crude salt to the fish tank, and they can recover by their own immunity. But if the situation is serious, the breeder needs to soak goldfish with yellow powder or oxytetracycline. Soak and wash for about 4 hours every day and persist for one week, and goldfish can recover.