I think the size must vary. The Omega One Betta Buffet Pellets I have are EXTREAMLY tiny. Like grain of sand size. They are half sphere shaped, so about 1/2 the size of other pellets I've seen like at WalMart and such. Tried to feed Gus just 6 this morning and he raised a fit! He gulped them all down in less than a minute like always, but then, he swam back and forth at the top of the water like WHERE'S THE REST OF MY FOOD! After several minutes of this, I gave him 2 more and gulped them down as fast as they hit the water!
Found out the other day that he's not that interested in bloodworms. He prefers the pellets. Picky boy!
He's such an active fish. He is constantly moving and exploring from before I wake up (8-9am) til past when I turn out the light (10pm). He does sleep (behind his little rock) and naps are rare. he wakes up at about 6am and in bed by about 11pm. He's also slim, so I think it's safe to say he burns off everything he eats. Either that, or he has worms!