I would try market talapia if I were you. Its really cheap. I've started sticking massivore and carni-sticks in the pieces I give my gar and Poly's. They all destroy talapia. You can get a bag of carni sticks that is just over a pound for around $35 online. Not bad considering how long it will last. Once you have the gar on pellets you shouldn't look back. Feeder fish are the worst thing you can feed any fish. Will most certainly lead to an early check out of life. Jumbo carni-sticks are a well rounded, complete diet. I would add talapia as a treat, and hide spirulina in if you can.