Unfortunately, they're very expensive. Almost $10 for a little over an oz. They are Nutrafin Max Betta Granules, the same brand as the flakes she(he) likes.
At least they are small and a lot come in the jar. It took my quite a while to find one Fishy would eat.
(Yes, I am questioning whether Fishy is a girl or a boy again - He/she started aggressively flaring at a mirror yesterday, and for the first time, I saw a beard, so now I'm thinking that she's a he - although, there still is a large white spot underneath where the eggspot is supposed to be.)