I hope your planning a huge pond in the within the year. Retails grow an inch a month and
IMO don't belong in people's houses or tanks. Same with the alligator gar. If it is truly an alligator gar then good luck. I want no business of a fish that gets 6-7 ft. Sorry by putting them in a 40 is
IMO not appropriate by any means. Good luck but honestly I'd rethink keeping these fish until you have a proper home for them. Most ponds or big tanks rarely happen for many reason. Good luck