I'm no Koi expert, but i'm going to guess its based on the quality...
Since i remember many years ago, if you were to buy top quality show Koi's from Japan, they would inject them to make them infertile so you couldn't breed them youself...
So i'm going to say, that is probably the difference, at least for the really high end Koi...
I'm no Koi expert, but i'm going to guess its based on the quality...
Since i remember many years ago, if you were to buy top quality show Koi's from Japan, they would inject them to make them infertile so you couldn't breed them youself...
So i'm going to say, that is probably the difference, at least for the really high end Koi...