Well none of my triggers have posed a single problem....all inverts have been safe to date minus one cleanershrimp, but I accidently chased him out into the open after he shed. I thought it was the shedding I was netting....turned out it was him. When he got out of the net it was already over.
No fish missing, pertaining to small fish. No corals getting nipped on. So far so good. They actually seem to school at times...and what makes it funny is the Picasso is the leader of the pack....he is smaller than a quarter. All other triggers are around 3 to 4 inches.
Seriously, not even those little rogue starfish have been messed with. I did see the picasso eat a hermit that was out of his shell, but then again I have seen my tang do that and my wrasse.