We use Hikari Betta Bio-Gold Fish Food for our betta. The pellets are very small so he has no problem with them. Ours gets 2 in the morning and 2 at night and he eats them immediately. He moves up to the corner of the tank when it is feeding time. When we drop them in, the current from the pump moves them straight to him. It's rare for him to miss one as it comes by but if he does, he stalks it and attacks it. I think he would literally eat the whole pack and explode if we dumped them all in at once.