I keep mine and havev hundreds in my fuge, but as far as keeping them in the display, Im afraid this will be debated for many years to come. If you must remove it, they make traps for them.
Over the years I`ve heard good and horror stories about them . After 16 yearI ever had them , that I`ve seen . But if they won`t hurt my fish or corals , I`ll leave them . Hopefully they won`t eat my clowns eggs when they spawn .