Goldfish

[puddin]

I got a 10 gallon aquarium at a flea market. I've had it running for 4 days now and it's just fine. I thought I could put the fancy goldfish in the tank and they would be just fine. So I went to the store to get the supplies for the tank, and they said I need a 29 gallon tank for 2 goldfish. I told a friend of mine and he said that was silly. Now, he might be thinking of the "true" goldfish, the ones that don't get that big. What do you think? I would prefer to get the 29 gallon tank, but if the 10 gallon works just fine, it will save me a lot of money.