"Who do I contact if I find an animal or plant that may be an ANS? Contact the NH Fish and Game Department at 603-271-2501 or the Department of Environmental Services at 603-271-2963."
BTW, Letting the "invasive species" fish back in the water alive, regardless of the wriiten law, would be much the same as closing the barn door after the horse got out!!!!!!!!!!!!!!!!!
Richard