I've had a juvenile, about 3 inches, for about 3 months. So far, he's been a great fish - hasn't picked at corals or clam, nor on any of the smaller fish. No aggression in either direction with my flame angel (slightly larger and longer established) or larger Purple, Blue Hippo, or Sailfin Tangs. Also pair of Maroon clowns, 3 different fairy wrasses, large foxface, and copper-banded butterfly. He did show a new tendency tonight of stealing krill out of the mouths of my sun coral, which bothered me a bit. I know it's still early, and don't put too much weight in my positive experience - a lot of growing and changing ahead.