Flatcoatluver is correct! Goldfish get BIG!

If you ever hear anyone say that they grow to their enviroment SMACK THEM UPSIDE THE HEAD (goes for all fish)! Its a horrible myth! When you prevent a goldfish from growing to its natural size by keeping it in a tiny tank, it will become ill (its insides keep trying to grow) & die young. If you think having a goldfish for 5yrs is a long time, your soooo wrong. They live about 10-20yrs if not more.