Those are great pics!
I think I might have found the cause of this. I really looked over my fish today and I noticed a small white patch on him. I think this is ich but I have no experience with it. I bought the Oscars at Wal-Mart and kind of felt sorry for them and I know they are probably questionable being from Wal-Mart.
Do I treat the whole tank or should I move my Oscar to my quarantine (I hope I spelled that right) tank and treat just that one fish?
Could my other fish be infected since the last fish I added were my Oscars and that was a couple of months ago?
Could the Oscar have had ich the whole time and just now start showing the symptoms? If so, how much damaged had been done when it has gone on for so long?
I am thinking that this might be stressing my fish out enough to cause it to change it's coloring.
Thanks
Jacky