well as someone who has kept 2 triggers in a reef tank with snails and crabs and a lobster i will say that there are reef safe triggers though when you watch them eat you can see why keeping them fed is important. reef safe is relative however so if you want a trigger be prepared to restock your cleaning crew a little more often. i have been lucky but you may not be. reef safe triggers are: pink tail trigger, blue throat trigger. somewhat less reef safe but maybe worth a try: crosshatch triggers, niger trigger. good luck