So after cycled... one example would be:
8 Norman Lampeye Killifish, 8 Dwarf Emerald Rasbora and either a Bolivian Ram or Apistogramma Borelli. It would be very pretty with colors and motion. Should be planted.
Another option could be:
2 German Blue Ram, 6 Cardinal Tetra and 6 rummynose tetra.
Just some ideas.