Sick Fish- Cotton Eye?

[eternitybc]

OK- Is it possible he went after a bristle worm?? I can't believe this is a fungus, because he had NO symptoms what so ever yesterday at dinner. His eye is not puffy, just has little glass slivers in them, same as his mouth...is it possible he tried to eat a bristle worm and was attacked? Or is there a fungus that could develop in 24 hours?

Trying to get a pic, but he's hiding in the back, and keeping his bad eye hidden.