I feed my fish everyday at the same time I feed my dog. When they see me with the small bowl I put the food in they start circling yet at other times they see me they don't. It's only when I have the bowl in my hands.
I prepare my own fish food rather then store bought food (see Beths fish food recipe at the top of the Disease and Treatment forum). I feed them this with fresh garlic, Selcon, and Vita-Chem. The only store bought food I give them is mysis shrimp. The reason I don't use the industry process fish foods is because the foods like Formula 1 and 2 are mostly water, about 95% I think. The fish don't need more water. It's also way more expensive then making your own food. I also feed my fish nori. I make enough at a time for about 3 months and it takes about as long to make it as it does to run to the lfs and buy it. It cost me about $6 for 3 months worth.