is it safe to move goldfish from a pond to a small tank?

no not a good idea,firstly goldfish should never be housed in a tank less than 30-55 gallons, fancy goldfish minimum 30 gallon for 1st fish,and an extra 10 gallons for each extra fish, common goldies or comets need even bigger tanks, 55 for the 1st, extra 10-20 for each fish thereafter, housing them in smaller tanks will stunt their growth, yes their bodies may stop growing on the outside but their organs will continue to grow and they will eventually die a painful death. and confining a fish used to space to stretch and swim freely to a small tank is in my opinion sheer cruelty.

a 2-3inch goldfish from the pet store may have been bred and stored in a small tank but when housed in a permanent home it should allow for their large growth. and the 1 inch of fish per gallon rule is complete rubbish-a 12 gallon tank will not house a 12inch fish, it wouldnt be able to even turn around,thats if it would fit in the tank in the first place!

if you are looking for cold water fish able to be housed in a small tank, why not look into white cloud mountain minnows, or if you add a heater, you have the choice of many small fish, or even a betta. and every tank no matter how many inhabitants needs a good quality filter. hope this helps.

Well a small tank, 10-20 gallons, is probably only a good size for 1 goldfish and moving a goldfish from a pond to a small tank is probably not a good idea. I would just go and get a good quality oranda or fantail goldfish cuz they are only like a dollar. hope this helps ^_^

Do it during a warm day like you would for tank to tank transfer. Put it in a bag of water from the tank and float it in the pond for a little to acclimate the fish to the water temp. You should be fine to do it now. The only concern id have is the fishes size might cause it to become prey to a wild predator.

I wouldn't do it, because they are use to the large body of water. The sudden change may depress the goldfish, which will result in a less colorful fish. Unless your moving him into a 50 gallon or bigger tank, he might be okay with that but not like a 20 gallon.

actually if you buy fish in petshop they are from ponds which transfer in a aquarium tank. You got no problem as long your tank is big enough. Then there are chances of fading colors indoor. Just fill the tank half with pond water then fresh water that is not clorinated.

no cos they are used to the water in the pond but if u add some water from the pond to the tank then they'll probs be ok.

U shud add about 8/10 of pond water and the rest normal. Then gradually add more normal water when u change the water. Remember to leave the water in a bottle for a few days to get rid of stuff in tap water cos it can kill ur fish

Its not advisiable. You should leave them where they are because it is what they have adapted to. Also, keep in mind that for every "inch of goldfish" you should have a gallon of water. So if together your pond fish are about a foot long, you should have a 12-gallon tank. Good luck with your fish!

Don't do it. Your small tank will doubtlessly be to confining.The food is more or less beside the point, goldfish being a species of carp can eat almost anything.

I think it depends on the size of the fish... i'd advise you keep them in the pond though.

I strictly opposed to your decision,goldfish that are big and used to a pond shouldn't be moved.