How long does it take for the baby goldfish to grow into full grown fish?

By

ScrpBkBon

I know my niece won a goldfish at a carnival one year when she was 5 yrs old. She is now 20 and the fish is still alive. 1 fish 1 big fishbowl and feed it 3 xs a week. amazing the fish is still alive.

By Carol in PA (Guest Post)

I wouldnt put baby fish into a tank with mature fish until they are almost the size of the larger fish. Be sure to provide a place for the little ones to hide. Some type of plant ..real or plastic, will do the trick. If you introduce them too early, the mature fish will eat the younger ones.

Gold fish are actually carp. They'll grow to about 18inches long.. Fish are kept smaller by keeping them in a smaller tank. I've seen goldfish in a pond and they're quite beautiful to behold.. (smile) But you'd be surprised at how large they can get! I dont believe they can over winter in cold climates. I"m not sure about that... so I wouldnt put them outside until you made sure.

By

coreenhart

One source I read said they grow about an inch a year.