Acei is unique among mbuna due to their tendancy to shoal (though they're not technically shoaling fish) and because of this are at their best when kept in numbers. Set the tank up as you would any mbuna and feed them what you would feed any omnivorous mbuna (see the pinned articals for more info). They are fairly mild and are best kept with less aggressive companions - Yellow Labs, Rusties, and Saulosi are good companions. Lombardoi, Crabro's, and Auratus are not such good companions.