The fungus is usually introduced into the tank when adding new animals. Treatment for this disease is difficult. Improve the environment and remove any possible causes of stress. Try a proprietary anti-fungal medication in a hospital tank. Food soaked in phenoxetol can also be effective if the fish is eating.
Stress breaks down the protective mucous coating on a fish and allows the fungus to gain a foothold.
Additionally, any new fishes should be given a short freshwater bath and kept in a quarantine tank for two to three weeks before being introduced into the main aquarium. This disease is usually caused by poor environmental conditions and poor water quality. If conditions are not improved, the condition of the fish will slowly deteriorate and the animal may die. Improve environmental conditions, maintain optimum water quality and proper diet. The use of vitamin supplements may help.