I had in 3" Scribbled Angel in my reef for about two months earlier this year along with a Regal Angel, 4 anthias, and a few wrasses. Beautiful fish, great personality, got along well with all of the other fish. But it was constantly nipping at anything and everything: clams, lps, sps, zoas. Ultimately I was forced to rehome her. The Regal was and remains many months later much better behaved and only nips occasionally, without causing any harm. Of course, YMMV.