Do you know what is wrong with it?That looks like one sick fish. Did you buy him like that? I would return it. It is sick.
They are air bubbles. I tried bloodworms but it doesn't seem like it ate them. Do you know what's on the eye though?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?
I have seen popeye before, but this is nothing like it. Its not the whole eye I'm curious about. I'm talking about the tiny ring on its eye. I put a arrow pointing to it in the picture below.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.