Not all Foxface react the same ... I had a tank with mix of softies, LPS and SPS ... the foxface was one of my favourites ... he never touched any corals and I even had a argrocrete back wall covered in GSP ... he did clean up nuisance algae though
He was certainly the most interesting as he would be swimming along and all of a sudden decide to camoflage himself against a coral changing colours to match the coral
He had some big tankmates though which may have spooked him

- Atlantic Blue Tang, 2 Yellow Tangs, Sohal Tang etc
very cool fish