Medium Tank

Will 12 medium sized goldfish survive a 10 gallon tank indoors for the winter?

I had a 500 gallon pond this summer, and for fun put 20 feeder goldfish in it. I just drained it for the winter, and rescued the survivors. I have four fish that are 4 inches long, five fish that are two inches long each, and 3 little one inchers. They survived overnight in a five gallon bucket, and today I set up a 10 gallon tank with an under gravel filter. The water came from the pond, along with some duck weed, a water hyacinth, and enough pond muck to get the filter started. Will they make it until April? Or do I need to find another tank and spread them out? I live in Alaska, so the winters are too harsh to leave them outside.

They will be it will be cramped. You going to have to make sure to keep tank cleaned well during the winter.

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