I have a 75 gallon tank with 16 mbunas and peacocks that has been running for 6 years. In the past week i noticed that my melanochromis johanni and a small aulonocara jacobfreibergi had skin peeling from their lips. I thought it was probably a fight they had gotten in with other tankmates. The next day their lips were very swollen and as the days went by it seemed to be getting worse. Now it has spread around their faces to the point that you can see the bones on the aulonocara. Both of them show some interest in food but they dont try to get it. I dont know if they have an infection or if they are going to be able to heal. Does anyone know what i should do?