I've seen pacus and oscars shabbier looking.. and they seem to get by.
He obviously will be the tank canary with such a open entry for an infective. One
Qt day too soon with new fish
(as in when they are purchased and added) and he will will be the one old resident hit first.
I think you were mixing the cart and horse by saying you thought
he was causing a prob for the other fish..he lost his mouth by trauma...not a disease, so it isn't like you could suspect him of being a carrier of one.
If a lot of NEW fish die of a disease and he gets it too....it was likely brought by the new fish. And he still survived!? Hardy constitution on that little guy!
But if it were not for the hole..I'd say "nice tetra".
Shiny, plump with headlight on highbeam? Swishing around and always looking for lunch. All a tetra should be.................... with a missing piece.
It even seems that the webbing is returning to his munched anal fin rays.
I don't think I could never dim such a bright and flashy guy with a burning alcohol chaser or trip to the artic. :?
edit:28May 7PST