How long does it take for a carp to hatch into fry in summer?

The hatching rate of carp varies with the temperature of the water. Water temperature 20 It takes more than 90 hours to incubate; Water temperature 25 about 50 hours; The water temperature is 30 and it only takes more than 40 hours. The water temperature is above 30, and there are many deformed freaks.

However, the water temperature is low, the incubation time is long, it is easy to develop water mold, and the hatching rate is also low.

Carp are sticky eggs, in natural waters, fish eggs adhere to aquatic weeds to hatch, carp fry just out of the membrane, can not swim, are attached to aquatic weeds. Carp mostly lay eggs at night or early in the morning, and the number of eggs carried by carp broodstock is closely related to their age, weight and physique. Generally, in the first two years of maturity, the quality and quantity of eggs are not as good as those in the next few years.

However, with age, the quality of the eggs will decline again.

Yangtze River Basin. The gonadal maturity of carp is the beginning of March and early June every year, earlier in the south and later in the north. After spawning, the ovaries degenerate and absorb in July and October, return to the period, and then gradually develop again, and then enter the period of wintering in November and December, and rapidly develop from the ovaries to the period of spawning in March and April of the following year with the increase of water temperature.

Extended information: Carp is willow-shaped, slightly raised on the back, has whiskers on the beak, large and tight scales, and complete and typical fins. According to the different growing waters, carp can be divided into river carp, river carp, and pond carp.

River carp: golden body color, metallic luster, red pectoral and tail fins, crisp and tender meat, delicious taste, the best quality; River carp: the scales are white, the body is fat, the tail is bald, the flesh is hairy, and the meat is slightly sour; Pond carp:

The scales are green and black, the thorns are hard, and the earthy flavor is strong, but the meat is relatively delicate.

It is widely distributed all over the country, although there are many varieties in various places, and the forms are different, but it is actually the same species, only in the southwest region.

There are 15 regional species, of which 11 are distributed in Yunnan lakes and 2 are in Xijiang, Guangxi.

1 species is in Qinjiang and Hainan in Guangxi, and 1 species is in Qionghai, Sichuan.

Carp mostly in shallow lakes or bays of aquatic weeds, the eggs are very sticky, after laying that is firmly adhered to the aquatic plants, the amount of eggs varies according to age and individual size, 15-800,000 grains, after the eggs are laid, they can hatch seedlings in 4-6 days at 15-20 water temperature.

Can you survive if you put your carp eggs in shallow water near the river?

It usually takes 3 days for carp to start spawning and it can hatch into small fish 3-5 days after spawning. Carp spawn in February and March every year, and April to June is the peak season, under the condition of recovery and abundant oxygen, the carp will rush to a warm and comfortable place, and then replenish part of the physical energy consumed by winter, and then will begin to prepare for spawning.

The suitable temperature for carp spawning is generally around 25, and the river flow rate is above, so it is suitable for carp to spawn under such conditions. In addition, carp spawning is generally not excreted all at once, but is divided into multiple outputs, especially for those carp with larger individuals, the number of times will only be more, which is a major feature of carp spawning. In addition, carp spawn in shallow water, where aquatic plants are abundant and reeds are abundant, and they spawn in groups, and because the eggs of carp are more sticky, they will also adhere to stones and grasses more easily.

It should be noted that after spawning, the carp should be changed to another place with water for isolation, it is best to have enough light and keep it warm, so as not to accidentally damage the eggs of the carp, and also change the water source in time, because the water will become turbid after spawning, so it is necessary to replace it in time to keep the water pure.

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.

<>1. Carp eggs generally hatch in 4-7 days.

2. Usually after it spins the seeds, the fertilized eggs should be put into the prepared incubation container. Families can use wooden pots or dark plastic pots to hatch, preferably with some aquatic plants in the pots to allow the koi eggs to cling to them. Secondly, it is necessary to maintain the water temperature, and the difference between the water temperature and the spawning of the tomb should not be exceeded, and it is recommended to control it between 23-25.

In addition, to maintain the water quality, it is best to choose tender green water for incubation.

<>1. Carp eggs generally hatch in 4-7 days.

2. Usually after it spins the seeds, the fertilized eggs should be put into the prepared incubation container. Generally, families can use wooden pots or dark plastic pots to hatch, and it is best to put some aquatic plants in the pots to allow the koi eggs to cling to them. Secondly, it is necessary to maintain the water temperature, and the difference between the water temperature and the water temperature at the time of spawning should not be exceeded, and it is recommended to control it between 23-25.

In addition, to maintain the water quality, it is best to choose tender green water for incubation.

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 spawned, 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.

It takes 3-7 days for the eggs to hatch, and generally does not exceed 7 days. It is important to note that the hatching rate of the eggs is usually related to the water temperature, and within the appropriate range, the higher the water temperature, the faster the eggs will hatch. If the temperature is between 15-20, it will take 5-7 days to incubate, if the water temperature can rise above 20, it will only take 4-5 days, and if it can reach 25, then 2-3 days will be completed.

It takes 3-7 days for the eggs to hatch, and generally does not exceed 7 days. It is important to note that the hatching rate of the eggs is usually related to the water temperature, and within the appropriate range, the higher the water temperature, the faster the eggs will hatch. If the temperature is between 15-20, it will take 5-7 days to incubate, if the water temperature can rise above 20, it will only take 4-5 days, and if it can reach 25, then 2-3 days will be completed.

1. Feeding: After the eggs hatch, the first thing to do is to feed. On the first day of hatching, you can not feed, and the fish at this time can continue to absorb the nutrients in the yolk sac, and you don't need to eat, and you have to feed them the next day.

It is best to choose to feed with water, if you don't have it, you can feed some cooked egg yolk or soy milk, but you should use a controlled amount to avoid bad water.

2. Water change: due to the poor adaptability of the newly hatched small fry to the water quality, do not change the water easily, the first water change should be carried out on the seventh day after hatching, and do not change too much, change a small amount of water to see the situation. As long as the feeding is not too much, the water quality is not easy to deteriorate, and there is no need to change the water frequently.

3. Temperature control: fry and adult fish are different, their adaptability to temperature is poor, and they must live in a higher water temperature, generally higher than the temperature of raising adult fish about 2, so that it can grow rapidly, and must maintain a constant temperature, temperature changes are most likely to affect the health of fish.