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?...................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
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.