Overeating?

[Sarretty]

As anyone heard of fish overeating? I have a fish swimming crazy with a big belly. I added aquarium salt (vs Epsom) and they have started "going". All the fish aren't affected. It seems as though I have already fixed the issue. But I'm certain they are not in the clear yet.

Thoughts??

 

[zooking12]

Fish eat whatever they can, whenever they can. Because, in the wild, they don't know whenn they'll eat again, and they can't leave food cuz anothere fish'll eat it. So it may have overeaten, or it could be bloat. What kind of fish is it?