I have 5 different fairy wrasses and none of them have ever touched one of my inverts, all of my fish love to eat mysis, brine, and my scott's like nori. I think Fairy wrasses are probably the most reef-safe fishes you can find although you might want to have a cover since they like to jump. What other fish do you have in your tank? I have also noticed you never see a exquisite wrasse that looks like the pictures you see on the websites.