I've had mine for almost a year and a half. He's been with many softiies, zoanthids, mushrooms, LPS, SPS and clams. Of those, the only thing he's bothered is my crocea clams and that was only one day about a year ago. He pecked at all 3 of them the entire day, and they were all closed up as a result. The next day, he left them alone and hasn't touched them since. He's currently in a tank with 5 clams (3 crocea, 1 derasa, 1 maxima). He's never pecked at any of the corals.
He's pretty territorial, and along with my male lyretail anthias, he's the co-boss of the tank. All new fish get roughed up by him at least a little bit.
