You have already purchased some Koi, and you want to upgrade the fins on some or all of them.
Make sure to use the same email address as the original order during checkout.

You can buy multiple of this upgrade: for example to upgrade 5 Koi, buy one “3 Koi” and two of “1 Koi”.

Make sure to let us know that you have completed the purchase, so we can release your original order: we will not automatically see that you bought this upgrade.