The babies will get along fine eating algae and stuff in the water. I put a few pinches of Tetramin Pro or other high quality flakes over the fake plants I sank in the pond. The big guys get most of it but a little gets into the fake plants where the babies prefer to hang out. I use fake because koi destroy most real plants they can reach. The little guys use it to hide.

It is pretty much up to you if you separate them. You will lose some either way. They grow fast. If all of them survived you would run out of pond very quickly. Seven koi are probably too many for 1000 gallons without a lot of filtration and aeration. It would be impossible to maintain 22 koi in 1000 gallons. They get big!

Since you have a mix of types the babies will probably not all be the same coloration as the parents. Even then markings can change as the fish grow and water chemistry and food affect color. By the time a spawn is over there might be several daddy fish.

It is possible the babies you see are not even Koi. Fish eggs sometimes travel in odd ways such as on the legs of birds, fur of animals that come to more than one pond or hidden in a plant . Some people mistake insect larva or tadpoles for fish. Time and observation will tell.

Yes I agree with sleepless. I have a koi pond with approximately 10 large koi fish. I also have small mosquito fish swimming alongside them. Chances are, a few baby koi will survive, because koi fish do not intend on eating other fish do to their peaceful nature, BUT koi fish will mistake smaller fish as food! When I feed my koi, they oftentimes swallow mosquito fish on accident. If you have a spare tank and a proper filter, you could scoop some pond water into the tank and get it running. To get the babies out safely, I would either patiently try to scoop as many tiny fish I can with a net OR partially drain the pond to the extent where the babies are visible and easy to catch and the parental koi are not stressed about the condition. If you choose to leave the babies in the pond, their only MAIN danger would be being snacked on by their parents, but they will not starve, so feeding is not necessary. Either way, u will loose some babies, but it would be a good experience for everyone.

To answer the second question, MOST likely, you will get orange and white colored fish. But if they are sun burnt or are suffering from stress or malnutrition or any other environmental factor, they may slightly change their color tone. Another possibility is that your parental koi fish is carrying a recessive trait (color in your case), and happens to pass it directly to their offspring. In that case, you may get yellow or black koi.

I think this will be interesting and I, personally would like to know if they really are koi fish babies or not. Please update your findings when you get the chance to. :)

Cat

LOL! cat, you are right. Sometimes the koi do accidentally scoff up a tiny fish with their food. Most of the time though I have seen them spit them right back out.

LOL mine don't!!! My big daddy koi fish opens his mouth for like 10 seconds and sucks in everything......including tiny innocent mosquito fish...... and...... nothing comes back out... unfortunately..... my big daddy koi died a month ago along with most of my other koi..... that was a sad day for me:(

Cat

Are you positive that all of your fish are koi? Do you see barbels on all of them?

My personal experience is that it's a bit unusual for koi to spawn in a pond that size and for the eggs to survive to hatch (they voraciously eat the eggs immediately after they are released).

I have had a huge pond for almost 10 years and have never had a baby koi.

Goldfish, on the other hand...they are BREEDERS. lol

I usually just let nature take its course in regards to baby koi I have a spawn every year and there always seems to be 8-10 that grow to adult size.Between the other fish eating them and the eggs not hatching odds are slim. Koi do change color and patterns, that's what some people find attractive is that you really never positively know what your going to end up with color wise.
Cat sorry to hear of your loss, I hope you folks don't mind but i am linking our website to this thread.I am the newly appointed webmaster for the club and believe in helping maintain their fish and ponds in the best possible shape.
the picture attached are of my Koi, not all of them but most I have a 6000gal pond and most of the larger fish I have had for going on 12 years got them as babies some were born in the pond

Here is a link that might be useful: Baby koi

I have a 1000 gal pond with 4 very large koi - grown from small in about 4 years. I have about 6 babies for the first time! They are decent size but not much color yet. I would like to keep them alive and healthy - understand that the adult ones won't eat them and that they will have enough algae to live on. Anything I should do? I am pretty sure that they are koi - they are shaped that way and seem to have the mottled spots but is there an easy way to tell? Thanks for your input!

Walmart carries minnow traps and they are reasonably priced. One of those in your pond might let you catch a few every day until you get most of them. I rarely have babies that make it because their parents think they are food. This year I started a pond just for lotus and stuck a few plants from the pond in it and I now have a 1" shubunkin. Next year I may try to harvest more eggs and grow some babies in the lotus pond.

This is the second year I have had my Koi breed, the first year I got 15 babies. This year 40 babies, we used a minnow trap and was able to catch 35 of them. Only 5 more to catch now, which is not a easy task in a big pond! Just need to figure out how to keep them from breeding as we only have a 3,000 gallon pond with 15 adults Koi (3 & 4 years old). Both times we have had baby's the pond had turned green on us, so that may be the trick, plenty of algae for the babies to eat! LoL I have read that you need 250 gallons for each Koi. So trust me you will have plenty of babies if you have male and female Koi together, without doing a thing to help them survive.

Well actually.... its more like 1000 gals for first koi, 500 for ea.
thereafter. yes it is possible to have exceptional, state-of the art
water filtration to maintain health (costs $$$) but bear in mind these are fish that
get to 2-3 ft in length. You want to see them schooling together,
swimming, diving, getting excercise. Its a myth that fish grow only as large to
fit the size of the container. Even if that were true (it isnt) then
why not just get fish appropriately sized for what you have. Goldfish
are bred these days for ponds -with bright colors, long fins...
virtually indistinguisable from koi, only difference is they grow 10-12
inches, not 2 or 3 times that..