Can koi cross with goldfish?

[enrgizerbunny]

Simple question. I'm looking for experience or research, not speculation, on whether goldfish and koi are genetically close enough to breed if placed in the same environment?

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[Tank Girl]

My understanding is that they can.


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[enrgizerbunny]

Anybody else?

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[stop.alvin]

They can breed, but the eggs will be infertile


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[gemach7]

Gold fish are derived from the Crusaian carp, they were domesticated for thousands of years. About 800 years ago they were bred for colour instead of food.

Koi are the same species as the common carp. Within 1 to 2 generations , without culling, the colours we see in them revert back to their wild colouration.

This being different species is why they produce infertile offspring.


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[Beefy88]

They can breed but the offspring , not the the eggs will be infertile


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