i agree with the others, a varied diet is best and just feeding one food isn't all that great for your fish.
my fishy larder holds:
frozen bloodworms, frozen mysis, frozen cubes of snail jello (the fish love this too!), shrimp pellets, algae wafers, NLS cichlid pellets, flake, and tetra crisps or granules (depending on what the lfs has in stock when i shop).
i also feed various veggies such as zucchini, cucumber, french cut green beans, and carrot slivers. this is mostly for the snails but the fish nibble too. one of my angels even has taste buds for zucchini, lol.
yep, the finkids eat better than i do!