The Goldfish Sanctuary
proper Goldfish care
You should never keep your goldfish in a fishbowl. It is very small, a nightmare to maintain, and often leaves your fish gasping for air. If you MUST keep your fish in a fishbowl for some reason, be sure that it is only filled halfway. Why? Remember that a greater surface area allows more oxygen for the fish. A goldfish bowl filled to the top may have more water in it, but the surface area is much smaller!
In a pinch, you could substitute several containers for a goldfish bowl. Anything large, water-tight, and clean will do. Make sure it is washed out, but do not use detergent. This is poison for fishes.
And, of course, buy a tank as soon as possible. They're not expensive, and your fish will thank you for it.