Hi, i got 7 guppies, and 2 Catfish Dwarf suckers, i feed the guppies 2 times a day, what thy can eat in 1 minut, and put one piece of squash in fore the Catfish Dwarf suckers, but my concern is that the guppies also eat of the squash, and thy eat from it most of the time, I know that they can eat themselves sick because they get too thick, should I be concerned?