I feed my tomato frozen brine/ live brine/ marine cruisine (a frozen mix), and flakes.... Every once in a while I add cut up clam or praun to the tank and they LOVE it.
My Tomato Clown gets fed once every day. He absolutely loves the Tetra JumboMin Food Sticks and frozen brine shrimp. I alternate those each day. He kinda likes the Omega One (Natural Protein Formula) flakes...but that's more for my firefish. My tomato clown is NOT aggressive with my firefish during feeding. (I was warned that may cause a problem, but nope...mine get alone fine)
todd, i'm assuming that ur clown isn't fully dark yet? It's probably (at it's size) starting to turn dark red but still has his juvi colors? Just a warning, once it leaves its juvi stage the firefish may have a dilemma.