Yes before everyone comments that this is a saltwater fish forum I understand that. I am just trying to get as much feedback as possible. I got 3 new discus fish about 2 1/2 weeks ago. After a few days them being in the tank my older 3 discus had something that looks similar to discus plague. That is treated now for the most part. Only one out of the 3 new ones have not eaten since I got him. I’ve been treating the tank with salt, api e.m. Erythromycin, and api general cure. But that’s not the only problem. To me it looks like his gills might be inflamed or something because of how far they are sticking out. He has also been breathing hard since I added him in. Any idea what this could be? I am getting very concerned now because for his size I would say his times running out as far as starving to death. What do I do? Thanks.