I purchased a yellow tang on Saturday and it does not seem to be accepting prepared foods. In the last 3 days, I've fed the tank flakes, seaweed on a clip, and frozen cyclopeeze. The tang has ignored all of them with the exception of taking a few bites of the cyclopeeze. It seems otherwise healthy, as it is actively swimming aroung and grazing on the liverock. Problem is, my tank does not have a whole lot of algae for it to graze on. I am getting a little concerned as it has not eaten anything substantial in the past 3 days. Any suggestions?