Schooling fish

[Trigger Man]

So I'm trying to find a good schooling fish for my reef tank. I had 8 Blue Chromis, but after 2 years there are now only 2 of them, and I found that for the most part they didn't really school. I just picked up a couple of Zebra Dartfish and they seem to be hanging out together at the moment, so does anyone know if they continue to school after becoming comfortable in the tank? Right now I'm leaning towards 8-3 inch Anthias, but would like some suggestions. My tank is a little over 125 gallons (five feet long).
I like the purple Queen Anthias, but heard that they are tough to keep so may go with lyretails.