A couple of snakeheads were found in my local river, scared the bejesus out of biologists. Haven't heard anything else about it in about a year though.
Thats exactly why thet are unfortunately banned...and also their reputation that they crawl on shore and kill people.

but if you release animals into your "property" after you win the lotto is not releasing them into the wild but intoyour private property. If I lived in a warm climate all year round, I would have an acre lake and release all my fish in there. California is not warm enough in the winter time. 55 degree water is kinda cold for all tropicals.