you know what i cant tell you because i dont have any shrimp because of my lionfish,
i know my snails and hermits are fine. from the looks they dont seem to be agressive, i introduced the 6 inch blue and he just started hanging out with the smaller one without fighting,both males too.
We have one. A female. Haven't had any problems with invert eating.. though I keep all the fish well fed. Triggerfish are my favorites hands down. Sargassums are my favorites next to the Crosshatch. I've read varied opinions on which Triggers will work in a reef.. guess it goes on the only predictable fish is a dead fish thing again.. though they are one of the more reef safe triggers, along with the Sargassum and Crosshatch.
I have a 4.5" male blue throat. 2 large fire shrimp & purple reef lobster. NEVER any type of problem. 120 gl 48"x24"x24"
I add glass shrimp often, and trigger eats those.
Fish eats anyting I put in the tank, and as much as he can get. Hes has gotten alittle aggressive with the other fish. Trigger has taken a few nips at other fish's fins, but never caused any serious damage to any other tank mates.