Right now I'm getting ready to send LeahK a box of randomness outside of the contiguous U.S. for her to open, only to be disappointed in. (She doesn't know this yet.)
lol. I'm waitin'....
Is my situation that strange that no one will even attempt advice?
That's probably the case. This has happened to me before, when my fish get some problem that really is off the radar. People are hesitant to throw out advice when they're unsure if it would be good advice or bad.
Is this common? Will I do it again if I overfeed him? Could it have been one of his tank mates?
I'm going to throw caution to the wind and offer my opinions on your questions:
I don't think it was caused by overfeeding. I think if an over-full tummy had caused a wound that goes all the way through his skin, he'd be dead. That would pretty mean that his stomach had exploded. I can't imagine a piece of food in his stomach pushing itself outward and causing the relatively clean would that's he's got.
So, I'm guessing the wound is a puncture would and it came from the outside. Maybe it was his tankmates, though that seems unlikely. Maybe he poked himself on something sharp in the tank. Any candidates you can think of?
Or, this could be some kind of weird flesh-eating bacterial infection, although again, I don't think he'd look so pretty if that were the case
Anyway, sorry no one else has had an answer for this. In any case, you've done a great job healing him up. In that second pic, the wound looks much smaller :thumbsup: