Depending on the actual footprint of the tank.I"m think a Polypterus delhezi (for the wow) and several african barbs and tetras you can add one or two of the following Ctenopoma .acutirostre-Ctenopoma acutirostre,Ctenopoma oxyrhynchus-Ctenopoma kingsleyae or maybe an African butterfly-and lots of plants-Anne