my dogface is in a mixed reef and it has been hit or miss as to what he will go after. For sure zoa's and mushrooms. He will clean out entire colonies in minutes after finding them. I am successfully keeping some shrooms and zoas on the other side of the tank around the nem and clowns as the big maroon is able to keep him shoed away. Corals that are in there with the dogface that he leaves alone are zenia, kenya, colt, pipe coral, green mili, gsp, toadstool, finger leather, hammer, and a couple brains.
It's been a learning process to find what he will leave alone. Even if he doesnt eat it he can demolish a colony just playing around with it