Guttatus (Gold Spotted) Rabbitfish Questions

[DanEnglish]

I recently acquired a 7" guttatus rabbitfish. He eats very well (mostly nori sheets with some mysis from when I feed the other fish and small amounts of live caleurpa). Is this a good diet? He has not picked on any corals yet and I don't want him to so I am trying to make sure he isn't hungry. Let me know if you have any advice concerning keeping this beautiful fish.
thanks
Dan