i have a 15 gallon tank which has more than 10 small fancy goldfish, would the fish still grow bigger?

i'm just wondering because im afraid the fish wont grow at all. Do they grow to the size of the tank?
Answers:
No, goldfish stay small as pets because of the bowl. In the ponds they grow as big as keyboards.

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You should have 1 gallon of water for each inch of fish you have in order for the fish to grow properly. Ex. 3 1" long fish, you would need at least 3 gallons of water.

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no

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i grew my fish on the yard..i dint had to feed them.or so.the feed from the ambient.and i shanged the water now and then..the lasted for years..the die.cause.i was to busy..working.

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How big they will get depends on several factors. Different types of goldfish grow to different sizes and how crowded they are will tend to limit their size.

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Yes but 10 goldfish is a lot for that size of tank. They will get bigger in a larger tank. A ten gallon tank is good for guppies I have about 15 in my ten gallon tank.The angel fish are in my 35 gallon and i have raised them from babies and they are as big as my hand, eight years later. Good luck with your goldfish!

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they will still grow but that's too many gold fish for that size tank

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THEY ARE ALL GOING TO DIE!
The RULE for baby-juvenile fancy goldfish is 10 gallons PER fish.
The ammonia from all of those fish is going to KILL THEM.
Adults will need 50 gallons PER fish because they get 12-14 inches long and excrete ALOT of ammonia. NO THEY DO NOT GROW TO THE SIZE OF THE TANK. You disgust me, what you are doing is equivalent to locking 15 large breed dogs in a small closet.