so, ive been keeping fish for 20 years but have never gotton into the rift lake cichlids. until now. all i had available was a 40 gallon breeder, so i decided a dwarf mbuna tank would be right. I bought 7 Pseudotropheus Elongatus today all doing great. really my only question is if i can add another small species to the tank, or just keep a colony of Elongatus? so, can i add another species, and if so what?