How to hatch a fish tank koi fish after spawning, when to feed the aquarium koi after laying eggs an

incubation methods; In order to have a high hatching rate, the water temperature of the hatchery tank should not exceed the temperature of the spawning tank!!

The temperature of the water during incubation also plays a role. The larvae hatch in about 5 days at 18 degrees Celsius, 4 days at 20 degrees Celsius, 3 to 4 days at 20 to 22 degrees Celsius, and about 25 o'clock and 3 days. Fish eggs, do not expose to air.

It should be fished out with water.

The larvae also have similar habits to goldfish larvae, and the feeding method is about the same.

Koi: Cyprinus carpio haematopterus) is biologically belonging to the family Cyprinidae, the largest of all fish species, with more than 1,400 species. It is a kind of high-end ornamental fish that is popular in the world today, and has the reputation of "living gem in water" and "art that can swim".

Because it does not have high requirements for water quality, its feeding habits are more mixed, and it is easy to reproduce, so it is praised and loved by people.

Habitation: omnivorous. Koi fish are gentle by nature, like to swim in groups, easy to raise, and have strong adaptability to water temperature.

It can live in a water temperature environment of 5-30 and grow at a water temperature of 21-27. In addition to the water temperature and the abundance of bait can affect the growth rate of koi fish, the growth of female and male fish is also very different. The age of the koi is determined as in most fish, and the number of rings of the scales is determined, which indicates the age of the koi.

As long as the fertilized eggs can hatch naturally, the water temperature in the pot should not be high or low. Big fish should be picked out.

It is best not to feed the small fish when they are born, and it is best to wait until after 24 hours, because the small fish are weak when they are born, and they need to absorb the nutrients in the abdominal cavity first, and then eat slowly.

Precautions for feeding small fish:

1. Don't feed on the first day: The newly born small fish can't be fed on the first day, and the fish at this time still have egg yolk, which is the main source of their nutrition, and they won't eat until they are absorbed. It usually takes a day before the fish can be fed after it has no yolk.

2. Feed selection: Fish that have not been hatched for a long time, can not be fed fish food and other adult fish to eat feed, the body size is too small so that it can only eat plankton, you can also feed it cooked egg yolk, but you must twist a little bit, too much is easy to spoil the water, similar food and soy milk or milk.

3. Precautions: Feeding small fish should generally be fed separately, that is to say, a tank is usually used for feeding, and a tank is used when feeding, and the water in the two tanks should be consistent, and the water temperature should be close. The reason why it is necessary to prepare a special feeding tank is because a lot of food will spoil the water, and if the water quality deteriorates, it will affect the survival of the fish.

Extended Materials. How to raise freshly hatched small fish:

1. The small fish that have just hatched from the eggs do not swim, but only suspend on the bubble nest. At this time, the male fish will take care of the small fish. If a small fish falls into the water, the male fish will return it to the bubble nest.

If there are signs of breakage, the male will repair the nest. Sometimes, males also use their fins to send water into their nests to help the young fish acclimatize. After about three days, the fish will be able to learn to swim flat.

There is no need to feed during this time, as long as the water temperature is maintained.

2. After the small fish learns to swim flat, you can fish the male fish out of the fish tank. At this point, it is necessary to start feeding the small fish. Generally, it is fed twice a day, and fish food can choose paramecium, green algae powder, and fine eggs of shrimp.

In addition to feeding, care should also be taken to maintain the water temperature at around 26 to provide a good environment for the small fish to grow.

Usually, after the small fish hatch out, they open their mouths to eat in two or three days, and it is generally better to use bagged shrimp eggs or egg yolk powder as open food. It is best to have shrimp eggs in the harvest year, and not mix with the water. When the small fish are older and can eat ordinary fish food, they can be fed micro-grained feed.

When koi fish spawn in the fish tank, the broodstock need to be fished out in time to prevent the broodstock from swallowing the eggs, and then the eggs are fished out for artificial incubation. During incubation, it is advisable to use acidic water, and control the water temperature at 18-25 degrees Celsius, and ensure that the oxygen in the water is sufficient. 2 Small fish can hatch in 3 days.

Newborn fry can be fed with egg yolk water to supplement nutrition.

When the koi fish spawn in the tank, the broodstock need to be fished out in time to avoid the situation that the broodstock swallow the eggs, and then the eggs are fished out for artificial incubation, which can improve the survival rate of the koi.

During the incubation period of koi, it is advisable to use acidic water and raise the water temperature to 18 25 to ensure that the water quality is clean and thorough, and to ensure that there is enough oxygen in the tank, and the fry can be hatched after 2 to 3 days.

When raising koi fry, it is advisable to feed it with egg yolk water, shrimp eggs and other supplemental nutrition, and the seedling growth period also needs to ensure that the feeding environment is quiet enough. Normal feeding can begin in about 1 month.

Koi fish can lay 20-300,000 eggs at a time. Koi fish breed in May, and females mature a year later than males. In general, koi fish grow very fast, and when they are still seedlings, they can grow in length by 10-20 cm per year.

When they reach adulthood, the growth rate will start to become slow. In addition, koi fish eggs generally take 5-7 days to hatch.

The number of koi eggs is still very large, and generally koi can lay up to 300,000 eggs at a time. Koi fish are oviparous animals, so pay attention to the temperature of the water when laying eggs, if the water temperature is too low, it will directly affect their egg-laying. Usually they are adapted to water temperatures above 20 degrees.

When koi spawn, it is best to put a separate fish tank, because once the eggs are laid, if there is no artificial protection of the eggs, the small koi can easily become food for other fish and even large koi. Although koi fish are highly adaptable, they do not have the awareness to protect the next generation, so they may eat their own offspring. Therefore, after spawning, it is also necessary to pay attention to isolating the broodstock and the eggs to avoid the broodstock from eating the eggs by mistake.

It usually takes 5-7 days for koi eggs to hatch. After 5 to 7 days, the baby koi will hatch. Freshly hatched baby koi should not be fed for the time being, just put them in water.

When the baby koi grow to about 5 cm, you can feed some foods with high nutrients to help them grow quickly.

Small koi fish in the growing stage have a particularly high nutritional need, so it is best to mix them with a variety of foods to ensure their nutritional needs in all aspects. When their gonads are mature, they can lay eggs and reproduce the next generation.

Koi fish are generally ready to lay eggs when they are 2-3 years old. Koi are oviparous animals, and male koi are almost sexually mature and capable of reproduction when they are 2 years old. Females mature later in sex, almost ready to spawn at the age of 3 years.

Once the gonads are mature, they are ready to reproduce. The cycle of gonadal maturation in koi is almost a year, which means that they can reproduce once a year. April to June is the best time for them to lay eggs.

Koi fish mostly lay eggs when they are 2-3 years old. Koi fish are oviparous fish, and females begin to reach sexual maturity and spawn at the age of 3. Males are sexually mature relatively early and have the ability to reproduce at the age of 2.

Once the gonads are mature, they can reproduce naturally. The koi fish matures once a year and can reproduce its parents once a year, and April to June is the best month for it to lay eggs.

The fertilized eggs are placed in the water, and the small fish can hatch in 5-7 days. After the koi fish have laid their eggs, the eggs should be fished out separately and placed in the prepared breeding tank to prevent the eggs from being eaten by the koi. During the hatching of the fry, the water temperature should be stabilized at 22-25 to ensure good water quality and wait for the arrival of the baby koi.

1. Broodstock: Broodstock cultivation is best started in autumn, because the water temperature at this time is more suitable, mostly around 25. They have a strong desire to eat and develop quickly. You can feed vegetables, lean meats, fruits, and other foods.

2. Fertilized eggs: Fish eggs are sticky and will be attached to the tank wall. After the fish eggs are put in, they should be observed frequently, and the unfertilized white eggs should be fished out in time to avoid polluting the water quality.

If it does not turn white within one or two days, it is possible that the fish will hatch without hair. Fish eggs are normal yellowish and transparent, and are fertilized eggs. It is recommended that it is best to take out the broodstock and keep them in other containers temporarily.

After spawning, the goldfish will be fished out of the nest attached to the eggs in time to avoid swallowing, and put it into a container containing the same temperature as the original tank water that has been dried, and the unfertilized eggs will become milky white after 24 hours, and they will be removed in time to avoid spoiling the water quality. The length of time it takes for goldfish eggs to hatch varies with the temperature of the water.

Generally, it takes 3-7 days from the laying of eggs to the hatching of small fish, and if the average water temperature is 15-20, the number of days of hatching is 5-7 days; When the average water temperature is 20, small fish can hatch in 4-5 days; When the average water temperature is 20-25, it only takes 2-3 days. In conclusion, the lower the water temperature, the longer the incubation time.

Goldfish eggs are normally pale yellow and transparent, and are fertilized eggs.

If it is whitish as an unfertilized egg or moldy it needs to be aspirated with a needle.

It is recommended that you take out the broodstock and keep it in another container temporarily.

Tanks with eggs should be kept oxygen-sufficient, preferably in the light, but not in direct sunlight.

In 2-3 days, you will see that the eggs are black, and at this point they have begun to hatch.

When raising koi fish, the koi fish lay their eggs in the tank, and if they want to hatch, they must be fished out of the tank and placed in a prepared container. Generally, if you are at home, you can use a wooden basin or a dark plastic basin. If conditions permit, you can use a separation net, and in the pot, you can put some aquatic plants to facilitate the attachment of fish eggs.

When the eggs are fished out, put them in the pot to maintain the temperature in the pot, after all, the hatching speed has a great relationship with the water temperature. If the water temperature is around 18 degrees, it will take 5 days to hatch. If the water temperature is around 20 degrees, it takes 4 days to be able to hatch.

Therefore, the water temperature needs to be controlled, around 23-25 degrees.

When hatching koi eggs, the quality of the water is best chosen green water. This is because this water quality can effectively inhibit the rapid increase of bacteria, and it can also speed up the incubation of the well.

Of course, when incubating koi eggs, if you find that some of the eggs are moldy, you should remove them as soon as possible. Avoid contaminating the water and affecting the hatching of koi eggs, as unfertilized eggs are prone to mold.

1. Transfer container: After the koi fish produce fish eggs in the fish tank, the keeper needs to fish out the fertilized fish eggs and put them in a separate container for incubation.

2. Control the environment: The water temperature of the incubation container needs to be kept at about 25, and the water quality must be kept clean, and the incubation can be successful in about 3 days. During incubation, the keeper needs to clean the eggs that are moldy or unfertilized to avoid contaminating the water and affecting the hatching of other healthy eggs.

Koi fish that have just hatched do not need to be fed immediately, because they carry vitelline when they are newly hatched, which can provide them with sufficient nutrients, so they do not need to be fed in the first few days of life. Farmers only need to keep the water temperature at about 26 and use an oxygen pump to increase the oxygen appropriately, and the baby koi can grow normally. When the vitelline they carry is absorbed, they can try to feed them with shrimp eggs, cooked egg yolks, etc.

When they can forage freely, they can feed the bloodworms and breadworms.