There's always a chance for the next in line aggressor to pop in and run the kingdom, the mixology of African cichlids is a hit or miss type of situation but when you have a really true terror its time to remove and hope you didn't promote the next thug to step up to the plate and deliver the beat downs my philosophy is to over stock so that no one fish is the recipient of the brutal beat down, sorta like a all you can eat buffet at a Chinese restaurant when you go up you have tons of directions to go and no easy choice because it all looks tempting, you can always go the route of adding several more definetly wouldn't do any less, later my friends..