I have a Blue Throat (4") along with a Clown Trig. (4"), Picasso Trig. (2"), Blue Angel (4"), Regal Tang (5"), Sailfin Tang (4"), Powder Blue (3.5"), Purple Tang (4"), Red Corris Wrasse (4"), pair of Maroon Clowns, Tasmanian Devil (Australian damsel), Caribbean Jewel Damsel, and Falco Hawk (2").
The Blue Throat does not bother ANYBODY, and the only fish I see occasionally give him grief is the hippo (regal) tang. Guess the two have a similar enough body shape as to give the tang fits. Of all the triggers I have kept the Blue Throat has been the easiest in terms of compatibility. Their puppy like personality make up for their slightly more subtle coloring (compared to the dramatically colored Clowns, Undulateds, etc).