Saprolegnia. The cherry lampfish is restless, and often rubs the affected area on the fish tank, water plants, etc. to relieve pain. Fish mucus increases, the muscles in the affected area rot, lack of energy, and loss of appetite. In common water, there are clusters of flocculent hyphae that fall off the fish body, which eventually leads to the death of the fish body.

Soak the cherry lampfish with 3% salt water once a day, every time 5-10 minutes. At the same time, add 2/1000 salt to the tank for adjuvant treatment.

Or dissolve 0.7 grams of methylene blue in 100 kilograms of water to make an aqueous solution, put the cherry lamp fish in it, and take a bath for 15-20 minutes until the mycelium falls off.