Of all the CBB's I've ever had, the only kind of anemones they eat are aiptasia and the true glass anemone that is about a quarter of an inch and clear. Since I quit trying to raise aiptasia in my reef, I don't mind if they eat those at all. In addition to little feather dusters, they will eat astrea snails when they can get them. I just put a few extras in my reef. Still have plenty left. So, astrea snails, feather dusters and aiptasia. That is far less than a yellow clown goby will eat and far less than a bicolored blenny I have. I have anemones in with mine and they never get bothered so long as they are reasonably healthy. He picked at one of those Corpus little jetty anemones when it was shriveled up once, but, still have that anemone growing nicely today. Also have a rather large Florida Flower anemone. The CBB never goes near that one and hasn't once. They do hunt for pods, little worms and eat a bristle worm now and then. You can always tell when they got a bristle worm as they shake and dance as if to say, "Wow - that was HOT but GOOD!" A well done reef has plenty of these things so an occassional one taken by the CBB doesn't hurt anything. I have a colony of mysis that has gotten established with the introduction of about 10 shrimp into the reef. These fish don't wipe the populations out so long as there are lots of shells, rocks and rubble for hiding and breeding pods, etc.