1. Fin rot disease. The fins are damaged, discolored, dull, and there are foreign objects in the rotten part. Or the transparent fin leaves turn white and gradually expand, and in severe cases, the fins are incomplete and cannot be stretched. Dissolve 2 sticks of gentamicin in a 200 kg fish tank for bath disinfection.

2. White spot disease. The whole body seems to be covered with a layer of white film, the mucus increases, the body color is dull, the fish body is thin, loses vitality, and the swimming is slow and often sluggish. Or floating on the water, or living in a group, loss of appetite, accompanied by bleeding spots on the body, and likes to rub and itch on aquatic plants, fish tanks, etc. Sprinkle 5-8/1000th of table salt into the tank and raise the temperature to above 28°C.