I had to condition mines to eat the arowana sticks also, but now he eats it eagerly. I do mix up his diet with krill, and blood worms, but his primary food source i the sticks. I don't want him to just want the frozen food all the time so i limit the amount of frozen food given to my jardini. If you don't already have one, a water heater helps big time with their appetite. The warm water boost their metabilism which makes them more active and eat more.