ok see this helps. well for community a nice schooling fish would be grat, some sort of largeish tetras or barbs. top dwellers like hatchets , danios, i have a new found lve for halfbeaks too. killis. for bottom u can do a nice pleco that stays small like blue phantom, gold nugget, clown, king tigers ect. depends on what u like really. nice schoo or corydoras would also look nice. If u like cichlids then u can try maybe a blue ram as a centerpiece fish. a pair of kribensis. depends all on u. anything that would help it narrow down?