I think Dexter meant to add a link to this thread:
Breeding the Banggai Cardinalfish in your Home Aquarium Introduction The Banggai Cardinalfish or Pterapogon kauderni is a species of cardinalfish endemic to a small area of Central Sulawesi Indonesia around the coasts of 33 islands in the Banggai Archipelago. They are a striking, hardy...
humble.fish
As long as it's alive, OR if it's in a high flow environment and is small enough, I think that most feeds should work. That being said, andrewkw's not the only person who's experienced a ton of hard times converting the fish to dead food. Artemia just works because it's accessible and there's a short/small learning curve (as opposed to pods for example)