How many days to koi fish stay pregnant?

Answer 1

Koi are egg layers rather than livebearers and will stay pregnant for days and days. When the female koi is pregnant with eggs, the male will agitate her into laying her eggs so he can fertilize them with their milt.

A great information source with some step by step instructions can be found here: http://australiankoiassoc.bizland.com/Breeding1.chtml. Don't worry if you can't do everything they reccommend as it is a guide for ideal conditions. If you have to make a few adjustments to fit your circumstances it's ok.

Note: a female koi may not stay pregnant. Occasionally the female will not be stimulated enough to give up her eggs. If that should happen to be the case, don't worry. Even though she'll look like she's going to explode her body will slowly re-absorb the eggs as protein and all will be well. More than likely she will give them up and then you have eggs to take care of. Hopefully the eggs are in a breeder tank, and mom and dad promptly removed after the eggs have been milted.

Answer 2

Pregnant Koi Fish

Answer 3

Female Koi Fish

Answer 4

Koi fish are egg layers. They only spawn once a year and that's in the spring when the pond water warms up to about 65 degrees.

I never heard of them spawning in a fish tank - only in outdoor ponds. So if you have an outdoor pond - check on your Koi next spring. They'll spawn in the morning. The males will chase the females around the pond. It will be a violent chase. The fish will jump and do all sorts of strange stuff. The'll swim side by side as the males force the females into some vegatation. They'll push against her side trying to get her to release eggs. If she does, he'll release milt to fertilize the eggs and the eggs will stick to the leaves of the plants. The males will keep doing this until she runs out of eggs.

Usually only one female will spawn per day. So if you have more than one female - check your pond the next day. The other females might spawn that day.

If you want the eggs to hatch, try to collect them from the leaves and put them in a fish tank. Once the eggs hatch you'll need to feed them special food for fry. Otherwise they'll starve.

Spawning Koi are a sight to see. It's amazing and I'm glad they only do it once a year.

Oh - the Koi love to eat their own eggs - so most of them won't hatch in your pond. But some may. So in a few months you may see a couple that made it. They'll be hanging around the edges of your pond.

Good luck,

Ken (a pond owner with Koi)

Answer 5

This Site Might Help You.

RE:
How many days to koi fish stay pregnant?

Answer 6

Technically, koi don't get pregnant, they carry eggs. They have the eggs at all times, but only some mature with each breeding season.

You won't get fry, however, unless you have a male present to fertilize the eggs as they're deposited.

If you want to attempt breeding, here's a link with information: http://www.olympickoiclub.org/koicare/breeding.html

NOTE: to the first poster: if you copy information from another source, it's not what "YOU" said

To both: You also must provide the source of that information, or it's a violation of copyright law. Please do not copy information from the web and present it is "your" answer.

Answer 7

Koi do not get pregant they lay eggs.

Breeding koi:

Fish Conditioning
Koi males should be 3-5 years old, 4-6 years is the prime age group for females. Condition them for one year. Make sure they are healthy and well fed. Put them through a hibernation cycle where feeding is stopped for several months. When it is spring, "love is in the O2" for fish.

Two males to every female should be placed in the "spawn pond" or tank. This separate area is needed to ensure genetics. When asked how to tell the difference between male and female fish, it became a hands-on presentation when Bruce scooped a male goldfish out of his tank to show the spots on the pectoral fins.

The males will develop spots, not only on the pectoral fins, but also the gill covers. They are little white spots that feel like day old beard. You may notice them chasing the females (they'll also chase males), or rubbing the female's side with their heads. This inspires the female to spawn. Females have bigger abdomens (no jokes, please) and when they are full of eggs, are notably softer.

Setting Up the Location
The fish then need several things to spawn: a place to lay their eggs (media), privacy, proper pond temperature, and water quality.

Media for goldfish can be yarn, attached to a cork that keeps it suspended in the water. For koi, there are many options, not all of them listed here. Evergreen branches can be tied together and suspended. You can grow grass on the bottom, and re-flood the pond. There are artificial media like PVC pipe with nylon rope attached and frayed.

The fry need a place to hang out when they are first hatched, literally. They cannot swim yet, so they need an area to be safe and secure. When selecting media, this needs to be considered.

Spawning temperatures for both goldfish and koi is in the upper 60s and low 70s. The eggs' incubation time is inversely proportional to this. You don't want it too high (they mature too fast and have mutations), or too low (they mature too slowly and have mutations). Bruce says sixty-eight degrees is optimal.

The breeding pond needs to have good water quality. A "springtime" effect prompts fish to spawn. Good aeration and O2 are needed. Remember the size involved here, a very fine mesh will be needed to avoid sucking small fry into your filter. After the spawning is done, an aggressive water replacement is needed. Your nose will let you know.

Most fish will spawn in the morning, between dawn and 9 o'clock. If they are disturbed, this can stop them from "doing the deed."

The Eggs
The eggs are really sticky, and will adhere well. Don't be too worried if the eggs start to grow a fungus-like substance. There are a lot of good eggs in there, too. Good eggs will be translucent. It's the unfertilized eggs that will be white and starting to grow fuzz.

At this point, remove the eggs or the parents from the pond. Eggs and fry can be eaten if you don't have them in a separate area.

The Fry
After they hatch, go 3-4 days without feeding them. After that, they require a good food source. Bruce prefers natural foods like daphnia (a fresh water crustacean which can be found in local ponds), or brine shrimp (the kind you buy in the store is too big, so you need to raise them yourself). It is a lot of work, but pays off. If you need an interim food source, boiled egg yolk will suffice. Bruce says it is like eating sugar for them. They love it, but it isn't the best. Plus, it contaminates the water.The temperature for growing fry should be 70-75 degrees.

Start culling at one month. This is where experience is needed. With goldfish, for example, Bruce was told to keep the dark and throw the white. For reasons only known to Bruce, he kept some white, and realized that those goldfish had the best colorations. Bruce culls out at least half of the goldfish at this time. Cull again after an additional 2-3 weeks. As they get older, give them more high protein foods.

PS: The guy below me just copied what i said!!!!

Answer 8

about 28 days.