I've had a pair of percula clowns for a couple years now. I feed them frozen mysis shrimp -- they seem to prefer the p. energetics brand over the gamma brand, even though I recently tried the gamma brand because the pieces are smaller (they leave any shrimp pieces that are too large), but they prefer the p. energetics between the two. All told though, they actually seem to prefer flake food. So now I feed a mix between the two (mysis shrimp and flake) because the LFS
people told me that the shrimp has more/better protein. They won't go near the pellet food that I tried.
Anytime I introduce a food that they don't like they just look at me like I'm an idiot. There was another thread on here about feeding time/memory. My pair get fed at 9pm every night and they are bobbing at the front of the tank like clockwork every time.