I've got a golden butterfly in with some sps, (hydno, acro, birdsnest, pocillipora), and an Emper
ator angel in there too. A passing nip is all I've ever seen either of them take out of the corals, but both fish will tear apart my caulastrea, so it's currently residing in my sump, as is is my other lps, (an open brain), the angel's favorite. My foxface has taken passing nips at the closed brain coral.
All of the coral colonies are fairly large. If any of these corals were frags, I don't think that they would survive.
I'm currently "farming" aptasia in my sump... :roll: , and I rotate some LR pieces back and forth into my main tank, where the butterfly makes short work of them.
The main tank gets fed food such as formula flake, pellets, mysis, nori, frozen brine shrimp and a frozen concoction that I make up myself. They would much rather eat that stuff than nip at a coral.
Mitch