i have decided it is too expensive for me to feed my clown knife, and save for a new tank for him. i make about 20 dollars a week, and he eats about 18 dollars worth of food, not a good idea when saving for a new tank, so i have decided to give him to anyone with the money, and space available. this fish is aproximately 12 inches in lenght, and will grow much larger! he eats aproximately 150 a week, commonly sold at pet stores as "rosies" or "tuffies". DO NOT FEED FEEDER GOLDFISH!!!! they cause vitamin D defficiencies, and can kill the knife over time. i say again, this fish is FREE.