The aggression level isn't the only worry here. Apistos are soft water fish, and needing temps in the mid 80's. Africans are hard water fish and needing temps in the upper 70's. There is no way to establish an environment that is healthy for both types of fish in one tank.
Being in the wrong environment causes a lot of internal damage, and is only a slow and agonizing death for the fish. I find nothing funny about this situation, and ask that you please move one group of fish to another tank before they have to die.
Between the aggression issues which are bound to happen soon, no way to avoid that (you have quite a lethal mix in there, especially that kenyi), and the improper environment for one set of fish, wrong temp, and even different food needs... you have a really big mess and leaving it that way would be irresponsible. I do hope you do the right thing.
Nice fish though. Are the apistos in the same tank with the African cichlids?
