Its going to be hard to keep a variety of fish with an Ornate, the Ctenopoma will become food for the Ornate. I'm doing the same thing trying to go all african fish. Stick with the smaller upper jaw polys like Senegal, Delhezi, Palmas Polli, Palmas Palmas, Retropinnis, Mokelembeme. Other fish would be African Butterflys, African Brown Knife, theres several varities of Microctenopomas Ansorgii, Kingsleyae, Congicum. The Ornate just grows too large too fast to have smaller colorful species.