Coral beauties are super sensative fish... They die veey quickly from ich i noticed.. 2 or 3 days they are gone... Thry csn hsndle hyposalinity unlike flame angels..
I have two one in a 30g one in a 135g.. both are picky eaters.. they dont eat foods i put in the water.. they just pick on the algae on the glass and rock.. So if you get one i suggest you get one thats confimed eating or have your tank full of algae.
Other then that there really pretty fish and mine are mellow.. I havent noticed them eating coral