My juvenile Zebra Danios have such tiny mouths. I have been crushing flaked food in my palm before sprinkling and spreading it in the tank. The food becomes more of a powder than it is granular or flaked. I started this practice after seeing a few individuals "hit" and then spit out larger pieces. Is this method proper? In general, will the fish be satisfied with small bites or do they prefer to take repeated hits on larger pieces?