That looks like one sick fish. Did you buy him like that? I would return it. It is sick.
I don't think it's ick. It looks more like air bubbles stuck to the fins and mucous.
The fish does look thin though. Is it eating?
Perhaps it's popeye? I've had a fish with popeye before. The eye could fall out, he could die, or get better. I don't think popeye is too fatal. I recommend returning him. Don't go to the trouble of trying to cure him.