lots of interesting trigger info on this thread. Just my 2 cents; IMO & IME, there is no trigger that is completely trustworthy with small inverts. Even a Blue Jaw. many of the "milder' triggers; like sargassums, Crosshatches, & Blue jaws MAY leave the small fish and inverts alone. But there is an equal chance they won't. They are still triggers and thats what triggers eat. Right now, I have a pair of crosshatches and a sargassum that will eat most shrimp, crabs, etc., and any fish that's small enough. before moving, I had a big male Blue jaw with the same eating habits. Not saying it won't work, it often does. But, it often doesn't too. I have a friend who had a sargassum scarf about a half dozen smaller wrasses in a weekend.