Here are some common cichlid species that are oftentimes available to be purchased. I have included their scientific names as well as their common names, which are mostly used to help find them in your local fish store. I have also included a picture of these colorful fish, their 'temperament' (whether they are aggressive or peaceful cichlids) and 'size'. This should help you in choosing African cichlids.
Metriaclima lombardoi (Kenyi)
Temperament: If taken from the wild they are very aggressive. If they are captive bred, then they are a little less aggressive.
Size: Up to 5 inches.