Thanks for all the great advice. Im working on getting a backup tank of at least 75 gallons to put the rd or texas in if need be. I have a 55 spare currently but thats not enough for them. Im hoping for the best with the tank but preparing to separate if need be. Im hoping since none of the fish look alike and they've been together since juvies that aggression wont be too bad. Oscar has been picking fights with the convict but nothing to really be concernd about. Thanks again guys