The Parrotfish-a buck-toothed, wide eyed, dorkus malorkus of a fish, and my personal favorite of all the ones we swam with on our recent trip to Hawaii.
Also spotted: (and by spotted I mean swam amongst daily) trumpetfish, needlefish, butterfly fish, angelfish, triggerfish, boxfish, sea turtles and about a zillion goatfish.
If you ever have the chance, I highly recommend going snorkelling in Hawaii.