He is not naturally a reef fish so he has no "reef sense" he is too small (and will remain so) to hurt any of my inverts or corals. He has been in there for over a month now. I'll post a couple more shots of the tank for those who think it can't be done.
Reefer831- Yes that is my largest birdsnest colony
sks4613- He isn't a threat due to the fact they are a brackish river fish, and so they don't see corals as food sources. I have lots of other fish, but they include a mated pair of Bluejaw Triggers, various wrasses, peppermint hogfish, evensi anthias, bluespot jawfish, midas blenny, naso tang, and plenty of others.
beaner_12- no I have well over 30 fish in the tank.