I have a Jardini Arowana that is about 3 inches. The store that I got him from was fedding him guppies. I really don"t was to keep on feeding him guppies so I tried other things. Frozen krill, blood worms, Arowana sticks, and color bits he won,t touch. The only thing he will eat are the guppies and crickets. Is there any thing I can do to get him to eat other foods?