I just gave a buddy my fancy goldfish and emptied out my 29 gallon. Now that I have no fish in the bedroom tank, I am considering upgrading to a 40 breeder or a 46 bowfront for a small community. I kind of want a couple keyholes and bolivian rams? Anyone have any experience with keeping these fish together? I've read they are about the same as far as temperament. Also any suggestions on something empty space fillers to make the tank for active? Considered rummy nose tetras. Other colorful fish to contrast with the keyhole, rams that would live well together?