I noticed my oscar has been pretty lethargic recently. He is usually the dominant one of the tank and pushes everybody else around during feeding time. When I went to feed him I noticed he wasn't fighting for food. Infact, he was getting pushed away by his other tank mates. Then taking a closer look he has what appears to be the beginings of a fungus maybe? He also has some nicks and scratches around his body from being pushed around. I moved him into a 29 and added medicating salt. I'll try to post a picture but I don't know how it's going to turn out. Should I get a fungal med for him. All I have right now for fungus is Trisulfa by Mardel. But I heard that causes nitrite or ammonia spikes.
Here
Here