Young goldfish display spawning behavior

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I have 2 goldfish in a preformed pond shell that is 18" wide by 18" deep.Each fish is around 4" long with one slight longer and more colorful than the other. Even though they are only 2 months old they are already displaying spawning behavior. Has anyone else had this happen when their goldfish were this young?
 

Meyer Jordan

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Goldfish do not reach sexual maturity until they are about one (1) year old. What you are observing may be just aggressive behavior. Did all of these fish come from the same source?
 
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I got them both from the same garden center at the same time. Only the more colorful one is aggressive toward the slightly fatter one but is not trying to hurt it. Hopefully it just means there is a male and a female in there.
 
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Hi Greg and welcome. I think it's very unlikely that both your 4" goldfish are only 2 months old. Did the salesperson at the store mention their ages?
 
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When I got them it looked like they were no more than a few days old. Photo shows what they looked like when I first got them. If you want to see what they look like now I will take a photo tomorrow.
 

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Mine are around that size and are from early spring which here was April so mine around 8 months old are about 4 to 6 inch's long .Some are bigger but they are the ones that gobble down the most food .So some growth or lack of it can come from the amount of food they get .I know even my koi from the beginning only got fed 3 or 4 times a week
 
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Goldfish fry are no larger than an eyelash. Basically they look like a tiny thread with two small round things on one end for eyes.
 
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Here is how big they are now.
 

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It's possible they went from 1.5-2 inches to almost almost 4 inches in a few months. They were definitely a few months old when you got them and not a few days old. Many times I have had young fish mimic some spawning behavior before they were mature enough to really spawn.
 

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