It depends on what's available. I'm a big fan of Rod's food, but it can be hard to find. Frozen Formula 1 or Formula 2 is always good and easy to find. Also, frozen mysis is sold by many companies. My favorite is PE brand mysis, but again, it can be difficult to find in some areas. I'm also not at all opposed to flake food. I just don't use it too often. Again, Formula 1 and Formula 2 are good flake foods as well. ORAGlo pellet food is made specifically for clownfish, but it's an excellent food for most other fish as well.