Ask Kal-El; if anyone, he would know. Years ago I moved an adult snakehead for a friend (well over a metre long; chewed through a salmon net we used!) but that was befoe the "interdreadnought" and I don't think anyone had a clue what species it was. And since it was in Canada it wouldn't have been on a restricted list of any kind.
That adult was an increadible blue/black with alernating white; large patches of it along it's side; when it was young it was the colour of mud, obviously a survival colour when you're small.