Discus gill problem

Hi, I have one discus that has one strange gill. He is not breathing strangely and his gill inside is the usual bright red inside, also he other gill looks normal.
All others are ok and i have treated for flukes just to be safe a but no change. As I say he is behaving normally and has has this a while but just want to check if I should be trying a different treatment. Ammonia is 0, nitrates below 20 and all other discus are happy and healthy. I have included a picture to see if it can help.

Thanks
AndyAttachment 131641

After a long standing fluke infection the gill tissue will not go back where it belongs. At this point there's nothing you can do. As long as the fish is acting normally don't worry about it.

I have a fish that had a gill issue but recovered. His gill still looks messed up but hes healthy and happy