From the pictures they look like Threadfin Anthias (
http://fishbase.org/Summary/speciesS...name=carberryi ), particularly because the yellow on the dorsal doesn't start to appear until behind the eye. Click on the fish picture for more images. My second guess would be Bartlet's Anthias, but the yellow starts from the mouth and goes right from the tail. (
http://fishbase.org/Summary/speciesS...e=bartlettorum ) Some of the fish seem to have the yellow starting from their noses, and one from behind its eye. Either way a nice harem!
Your SPS are just beautiful. Do you find you get more of one color under you lighting? E.g. more pieces turn blue/purple?