If you want schooling fish with no worries of it terrorizing anyone or anything in your tank I would go with some Anthias. They school and I have a bunch who are beautiful, peaceful and amazing to watch. They really add that orange pink and purple "pop" to the tank!
I've had the yellowtail blue damsels and they drove one of my blue chromis' to death, nasty little buggers. I traded them back to the LFS immediately, they were the most aggressive fish I've had. Them and the Clarkii clowns I had.... they killed off all of my shrimp and a blue chromis aswell
