CHilodonella disease is caused by a parasite and is a major threat to the health of the fish. This disease can occur after a fish has suffered an injury. The parasite can survive in a wide range of temperatures so outbreaks can occur when water temperature is very low and the immune of the fish is at its weakest. Chilodella is potentially more dangerous than Ich, because there are few visible signs of this disease during the initial stages. By the time the disease is detected , severe tissue damage may have already occured.
Symptoms of this disease includes laboured breathing problems and clamped fins. Often the fish will become very lethargic and lose its appetite.
Treatment for Chilodonella includes formalin and malachite.