Currently have 14 Red Terrors growing out in a 90 gallon at about 2 inches. Have a 180 with 10 Red Head Tapajos and 11 Quarter size angelfish. I know the RT would be better off in the 180 but don't know how I feel about dedicating a tank that size to 2 fish if they pair up. If I did move them could I do Geos and angels in a 90 and how many of each? What would you do?