Actually, I wouldn't. If you lack the ability to do research, you should not be owning these creatures. Your ignorance is staggering. If you cannot tolerate the truth, fine w/e.
I for one will not tolerate complete disregard and ignorance for the welfare of these animals.
You have 40 gallons for a fish that needs 55 gallons fully grown. Those fish (the occies) need 20 gallons.
Furthermore, if you didn't want the opinion of this community or someone contained within it, don't post here. Simple as that.
My suggestion would be to get some divider. Split off the forty gallon so those fish dont reach each other. Finish the cycle on your 27 and move the occies to that. Leave the Maroon in the 40B and maybe get it a mate.