They may or they may not. I have a Duncan coral, a hammer, and a torch and they've chosen my mp10, zoas and now they don't host anything. Soooo they basically don't do what you want them to lol
20 Gallon SPS reef
29 Gallon FW "fat catfish" tank
20 Gallon Long Dart Frogs "Zig" and "Zag"