50lb Aquamax 500 Sportfish - 100% nutritionally complete and was developed by professional nutritionists with the help of fish experts. Formulated as an easily-digestible, high-energy, nutrient-dense diet with excellent conversion rates, Sport Fish 500 has high feed efficiency and rate of gain and is designed to stimulate aggressive feeding behavior. AquaMax® Sport Fish 500 is a floating product in a in a 3/16" extruded pellet.