I used to feed them once or twice a day, and they would get Omega One flakes and shrimp pellets. I thought maybe that was enough because they were growing, but now they beg constantly! I knew I shouldn't have given in. . . the other day they got flakes four times. . . and still wanted more. They're like starving puppies. I can see their little bellies get round after a couple feedings, but how much is too much? They prefer flake to pellets, and the tetras like it too. Even later in the day they still hit the flake hard enough to cause popping noises when they come out of the water.