sadly just recently, my gar had some kind of illness with about 20 redish pink things coming out of his body and fins so i moved him in a 55 gallon and he got worse and i just could NOT put him down so i put him in a local pond
so..because you could not kill it ...you put it in a local pond where it will suffer and die..AND infect other native fish?...................
please please never ever release a fish EVER ..non native fish spread diseases that your local fish have no defenses agents.
what you did was highly irresponsible, and 100% illegal in any state in the US.