CATDOLL : CATDOLL: How do koi lay eggs?

1. How do koi lay eggs?

Care and conditioning of goldfish before breeding and spawning

Brief description: Management of goldfish before spawning In spring, the temperature rises, around mid-February to early March, goldfish can be moved outdoors for breeding (commonly known as "out of the basin"). The period from this time to before spawning is very important for goldfish, because goldfish have just woken up from hibernation and encountered complex weather changes in early spring, with temperatures changing... Management of goldfish before spawning In spring, the temperature rises, around mid-February to early March, goldfish can be moved outdoors for breeding (commonly known as "out of the basin"). The period from this time to before spawning is very important for goldfish, because goldfish have just woken up from hibernation and encountered complex weather changes in early spring, with large temperature changes. Many bacteria and parasites begin to be active frequently, and goldfish are very easy to get sick. If management work is not kept up, they often die without leaving offspring. Therefore, at this time, we should pay attention to the following points: 1. Disinfection: Before goldfish are moved outdoors for breeding, the fish pond (tank) should be disinfected and soaked with salt water or potassium permanganate solution, filled with new water, and some green water should be added appropriately to make the pond (tank) water quickly turn to tender green. Then choose the weather with wind and warm sun to move the goldfish outdoors for breeding, but be sure to pay attention to not let the water temperature rise or drop suddenly. Let the fish get more sun during the day, and cover the fish pond (tank) in time to keep warm at night when the temperature drops significantly. 2. Out of the basin: One or two days before "out of the basin", the goldfish broodstock should stop eating or eat less, because the digestive function of the goldfish that have just awakened from the winter has not yet recovered, and the goldfish cannot fully adapt to the change from indoor to outdoor environment for a while, so it is better to feed less and gradually increase it later. Especially when the female broodstock is full of fish eggs, it is forbidden to subjectively want the breeding fish to spawn as soon as possible and change the water too much and feed blindly, otherwise it will delay spawning, and even cause the cloaca to be blocked, resulting in dystocia and death. 3. Disease prevention: The temperature in spring is just suitable for the reproduction of some parasites and bacteria (Ichthyophthirius, Trichodina, fungi, etc.) in the water that harm goldfish, which can easily cause goldfish to suffer from white spot disease, gill rot, water mold disease, etc. Therefore, special care should be taken during operation to avoid scratching the fish body to prevent bacteria and parasites from invading through the wound. At the same time, a trace amount of salt (3-5 grams of salt per 50 kg of water) or a small amount of penicillin, kanamycin, etc. can be added to the water to prevent and treat diseases. 4. Fishing with water: Fish farms and families with conditions need to expose the water to the sun for 2-3 days when changing the water in the broodstock pond (tank). Do not use raw water to change the water. Especially when changing the water, it is best not to use a rough scoop net to catch the big-bellied female fish, but to use a spoon to scoop up with water or scoop with both hands. If there is an idle pond nearby, you can directly scoop the fish into the pond to reduce the squeezing of the broodstock in the basin or net cage. The water temperature difference is small, which is also the key to preventing fish diseases when taking them out of the basin.

2. Koi fish are about to give birth, how to take care of them

Of course, the male fish must be put in when spawning, otherwise how can it be fertilized? Koi fertilization is completed when spawning. The male fish will chase the female fish, and the female fish will lay eggs. The male fish will ejaculate behind her to fertilize the eggs.

Since you were able to hatch the little fish last time, you can just follow the spawning method as you did last time. Also, you need to remove the male and female fish after spawning, otherwise they may eat the eggs.

It seems that you just can't get over the difficulty of raising small fish. Now the key is to raise the fish.

It is actually not difficult to raise small fish.

1. Just master the feeding and water changing. Do not feed on the first day and feed on the second day.

Water temperature is critical to the growth and development of fish, so pay attention to maintaining stable water quality. Small fish generally like old water. As long as it is not too turbid, do not change it too often. Feed 2 to 3 times a day, and it is best to finish eating within 20 minutes each time. Pay attention to cleaning up feces and leftovers in time to prevent the water quality from deteriorating due to high temperatures in summer.

Second, there are several ways to feed:

1. Feed paramecium, brine shrimp, and water earthworms. Brine shrimp eggs can be bought at fish shops to hatch.

2. Egg yolk can be crushed and wrapped in gauze, and shaken in the fish tank when feeding. You can also put a small part of it in the water.

3. Feed. If the feed for big fish is solid granular feed, you can grind it into powder and put it into the water. The feed will be softened and the small fish can eat it.

The fish fry are relatively small, so it would be ideal if you could catch small red worms or cultured "grey water" (including Paramecium) to feed them, but be careful not to feed too much to prevent the water quality from deteriorating.

3. When changing water, pay attention to the water quality and temperature. The difference should not be too big, otherwise the fish will be in trouble.

4. The little fish is weak, so be careful not to let it get sick. If it gets sick, treat it immediately, preferably with special medicine.

When the small fish grow big enough, they can be raised like big fish.

If you have any further questions, please send me a message.

3. What to do if Koi is about to give birth

Koi lay eggs, but never give birth... The eggs must be taken out, otherwise they will be eaten. The small fish eat gray water, egg yolks and so on, and they will lay hundreds of thousands of eggs at a time... It's enough for the OP to bear, hehe!

4. Issues with inducing spawning in fish?

It depends on what kind of fish you raise. Some fish lay eggs multiple times. You can give them injections of induced spawning after the first spawning, and master the intervals. If it is a single spawning type, once the eggs are laid, you can no longer give injections of induced spawning. Hatching failure is probably because your hatching technology is not up to standard.