Right now when my Oscar is hungry or see's me walk past the tank he goes to his one spot for food. I have gotten him to take Earthworms from my hand. I also cannot drop a algae wafer in the water cuz he is like a dog with a new bone he takes it and plays with it and swims around the tank with it so the other fish won't get it. He teases the other fish too he will drop it every so often watches them eat on it then goes and gets it swims around with it in his mouth and drops it again.