I was wondering if anybody knew of any reef safe schooling fishes that were active and stayed small. I don't want them to grow past 3 or 4 inches. We don't want any damsels either unless you guys know of any that aren't terrorists.
Chromis are a classic. Cardinals are great, particularly in combination with longspined urchins.
As for damsels -- the yellow-tailed blue ones seem fine -- so long as you put three or more (in odd-numbered groupings.) They stay small and are mostly concerned with keeping eachother in line. However, they don't really school so much as sometimes hang out together and chase eachother.