About 4 days ago I noticed the tips of all of my Oscar's fins starting to rot, and his scales on both sides of his body (one side a little more then the other) or sort of turning whitish and some are lifting. It seemed to happen over night because the night before he looked perfectly fine. So I treated him with some "Jungle" Parasite fizzing tablets because it said it worked for Fin Rot and I see it recommended here a lot. That treatment seemed to slow it down but now he still seems to have it and it is getting very bad. To the point where I think he only has scales on his head. But the middle of his sides are still white. He his still eating and acting the same just a little slower. 
