Is it ugly? Mine is. It is in freshwater with a salt regimine.1tbs/5g. They are very voracious and I feed mine live nightcrawlers twice its length!! When they get irritated or threatened, apart from the sting, they make a very loud and persistant noise.Weird. It sounds like rubbing a clean finger on glass...thats the best I can discribe it. Weird.
Anyway, they are cool fish and they WILL sting you if the have to as well as your fish.
If this is in fact the same fish.