Some of the food that we feed oscar is placed at the bottom of the tank,he does not eat all of it,so when we move the tank,some of the food coming from the bottom of the tank moves up and floats at the top of the tank,then our little Oscar eats that food and enjoys every bit of his meal,we feed Oscar in maximum of 2 or 3 times a day,we havent tryed out new foods yet,but we hoping if we give him other types of fish foods,he will be able to eat them and enjoy them aswell