I can't help with your question because I don't know but I would sure take a bunch off your hands if you wanted to ship some for postage.
Darla

Alot of them wont make it and being theyre little let them alone.When they get bigger and too many sell some.

Hi Lotus lady.
Your babies will do nicely in that big pond, especially if they have rocks and plants to hide in. Your big fish will not eat them unless you have big goldfish too. (they will)
They will be temptation for racoons and heron. Use a water "Scare Crow" for predators. Koi will eat their eggs, but not the fingerlings. Net out the ones with no color or bland colors and give or sell them. Keep the rest! They will be a good investment later as 2 year olds
will sell of upwards 200.00 ea.
Also, make sure your koi food is small enough for them to get some. So feed a varity of size pieces.
Good Luck!!