#bullseye snakehead

I am planning on rescuing a 26 inch Channa Maurulius ( bullseye snakehead ) but can I keep it with a pair of 18 inch Alligator gars in a 8ft * 3.5ft * 3.5ft outdoor tank. I know the tank size is temporary. I had never kept a channa Maurulius and I want to know their temperament with other fish...