So I have a betta and a school of micro pellets eating fish. They are getting along marvelously BUT...the school fish are a scaredy little bunch and as soon I open the tank lid to feed them they go and hide. In the mean time the betta is gobbling up their food. He's got no problem even chasing the pellets down as they start to sink. I'm worried that betta pigs out and the school stays underfed. The school stays only at mid level and gather together at bottom when they hide. Never come topside. What to do ? I've seen the betta even spitting up pellets.