Hey stranger- good to hear from you. Ya, some of the Dwarf Angels do rip into corals. Weird thing is some do an some don't from the same species. I wonder if it is a taste thing - like how different people like different foods , or if it is a nutrition thing, or what?? I have both a Cherub and a Coral beauty that are currently model citizens in my new 150 mixed reef tank. They even get along between themselves.