Hi everyone, I have a marble sailfin catfish in a 75 gallon tank with an african lungfish. The african lungfish is about 14 inches and the sailfin cat is roughly 8 or 9 inches. He is constantly either getting fungal infections or bacterial infections. Does anyone have any idea what could be causing this? Is this type of catfish known for getting sick alot? Cause everytime he gets sick, the luncfish has never caught it, knock on wood. Could the lungfish be harassing him into getting sick and stressed out? I notice the lungfish pushing the catfish around during feeding time, but they have seperate places to hide and he only bothers him during feeding time. I know the catfish gets enough food cause I hand feed him to ensure that. Any ideas? Thanks.