Ohh nooo.... :(
Have you tried anything to treat it?
OldFishLady on here suggested to speed up regrowth.. to start using aquarium salt & feeding him a higher protein diet...Just can't figure out what "toys" he likes best...I don't see how he'd be bored?
LOL Hmm...Sterling is a cool name...like sterling silver...? Apparently it means like the best..or somehting...that's all i got for now. Ill let you know if more suggestions pop up :)