chiclidlover81
Aquarium Advice Freak
dottys tend to be very aggressive towards one another hope this helps and good luck
If you need more ideas, sites like liveaquaria have lots of fish, tank size recommendations, compatibility charts etc.
I'd go with some kind of Dwarf (coral Beauty, Eibli, MultiColor, etc) or Pygmy angel...a small Tang (Tomini, Kole, etc)...maybe some kind of smaller wrasse (flasher or fairy...plenty of colorful options).