They're always looking down in search of food. I think if I let them eat all they wanted in 10 min they would explode!! I saw something on Shads head and took a moist q-tip to wipe it off and Meshack came flying across the tank and tried to eat the q-tip. One day I was cleaning the tank, had on blue gloves and Shad was biting at the glove. Abendnego sees the tongs coming and will sit there with his mouth open waiting for dinner to arrive. Cute? Yes they are, but these little green gems just crack me up!!