How many gold fish do u think i can put in a 10 gallon aquarium?

One. There shouldn't even be 1, they will out grow it.

Right now. One. Keep in mind it will get too big for it soon. So, what is better for you? One fish now and having to buy another tank later, or put in a couple of smaller tropicals (like a couple tetras, guppies, minnows,etc ) and have an established tank.

1 or 2 max by the time they get to be full grown. I have just one fantail in my 10 gallon. They'd do even better with a bigger aquarium.

For what it's worth, I think you would be better off investing in a larger aquarium. It is not much price difference in 10 more gallons.

Zero. Fancy goldfish are the smallest goldfish, and they will grow to 6 inches mimimum, and often 8-10 inches. Way too big for a 10 gallon aquarium.

Everyone said the norm is one per 10 gallons, but I feel that you can have at least three so they have a pal. I have 20 in a 55 gal tank and they seem fine if you keep the water clean and change the water twice a month. I also mixed them with a guppy, 3 tiger barbs zebra, a algae eater and a snail and they all live in harmony. I try this because I saw it in a pet store that advise me that they could do it because they have good filtration system, so I went out to buy a good one and it works well.

It's recommended that you have a least one gallon of water per inch of fish. So depending on the size of your gold fish, anywhere from 3 to 15.

if you don't want to go to the trouble of a heater, etc that tropical fish need, you can consider a betta, they are pretty, can live in unheated water, they actually don't need a lot of water but it would be fine, l had one in a 10 gal tank, only one to a tank tho, i have a 50 gal tank that my grandson left here and there is one gold fish in it. in all fairness, there had been two .*****the inch rule, l've been told two , is ok but don't forget the fish grows, the fish l have is 5" long and 2 1/2" high

I think three to four fancy goldfish will do the trick.