I'm still debating on putting this on in my DT??? Only eats nori and graze all day
Here's what it says on the Live Aquaria site
The Moorish Idol is also commonly known in Hawaii as "Kihikihi" which means "curves," "corners," or "zigzags," and refers to its shape and color pattern. It is the only member of the family Zanclidae, and a very close relative of the Tangs or Surgeonfish.
So hopefully since it's a relative of the tang family, it won't eat coral.