Most of the time these fish, as well as others, get a bad rap that they don't deserve. Understanding how they live in the wild will give you a guide to keeping them in a tank. They are NOT solitary fish. They are normally found in large aggregations and develop a hierarchy. IMO the key to success is to recreate this in our tanks. By keeping them in larger groups of damsels they do not develop that little fish backed into a corner attitude. They need a lot of little holes to sleep in, to call their spot. But they will not develop that nasty territory defense if they can't claim one. By keeping them in groups they have to split their aggression in many directions and adopt more of a live and let live attitude. I think they evoke images of a reef like maybe only a few fish can. Such as Anthias, chromis, or maybe swarms of butterflies and tangs. I vote yes on the damsel!