I agree with Coler, some time ago I wanted an extremely aggressive tank thinking it would be cool (kinda like having pretty looking piranha tank), but after you either lose a few fish (and some of these africans are not cheap) or witness constant beat downs where a whole group is either bullying one fish into hiding ALL the time or one bully taking over the whole tank sending the group of less dominant fish into a corner where they spend all of their time hiding and avoiding getting ripped you'd have second thoughts and would more than likely seek out the less aggressive species to come as close to a "peaceful community tank" as possible.