How many small fish can crucian carp reproduce each year

Crucian carp can be reproduced naturally or artificially, and at present, it is mainly based on natural reproduction, and the improved crucian carp is basically artificially reproduced. Such as: Peng Ze crucian carp, heterogeneous silver crucian carp, etc.

Crucian carp generally 1, winter-old fish have 10,000 eggs; 2. 20,000 grains at winter age; 3. 10,000 grains at the age of winter; 5. Winter age can reach more than 110,000 grains. The age composition of the reproductive population showed that the 2nd and 3rd instar fish were the spawning groups according to the aquatic breeding materials of Liyang City, Jiangsu Province.

During the reproductive season, it is easy to distinguish between male and female from the appearance of the fish, and the male has a white granular "pearl" on the first fin bar, and the female does not have a "pearl star". Crucian carp is staged and spawned in batches. The spawning period starts around the Qingming Festival of the lunar calendar and can be extended to August, with April and May being the peak.

Spawning begins when the water temperature reaches 17, and spawning is at its peak when the water temperature reaches 20-26. Crucian carp like to spawn in places with soft substrate, abundant aquatic weeds, and clear water. Most swim against the water to the spawning grounds after the rain in the middle of the night or in the morning.

The spawning grounds are distributed in shallow waters along the shores of the lake, with a depth of about 1 meter. Crucian carp can spawn in still water environments. In natural waters, spawning is laid on aquatic grasses.

Artificial spawning in the pond, can be laid in the artificial put into the fish nest, the fertilized eggs are sticky, slightly yellowish, the egg diameter is millimeters after water absorption, the yolk diameter is millimeters, the water temperature is 17-19, and the hatching is 8 days and nights. The larvae are millimeters long, completely covered with scales, and morphologically have all the characteristics of an adult.

Crucian carp has a strong reproductive ability, if there is enough food, it is better and more, and the growth is also very good, basically a pair of broodstock can breed thousands a year, and there are hundreds of survivors, depending on the specific situation and environment.

Wild crucian carp can grow about 50g a year; If it is an ordinary fish pond culture, it can grow to 150-200g; If it is a reservoir with plenty of food and fertile water, it can grow to more than 250g.

Wild crucian carp can grow to about a few tens of grams a year, that is, about 1 tael. Crucian carp is the fattest in February, April and August, and especially in March-April, crucian carp is thick and has a lot of roe, so it is delicious. It is one of the important edible fish in China, all over the country water perennial production, mostly in the Yellow River Basin, the Yangtze River Basin, the Pearl River Basin, in the water movement, foraging, habitat, habitat depth of 0 20 meters.

Precautions for wild fishing crucian carp

1. Point selection: users need to pay attention to avoid crystal clear waters, look for slightly turbid bottomless waters, rising water fishing beaches, avoid water fishing pools, near fishing is better than far fishing, choose a water depth of about meters, slightly darker water color, the bottom of terraces or aquatic plants lush waters are better.

2. Cloth nest: the precious essence is not expensive, the wild waters are vast, the density of fish is not as good as the fish pond, should be found at the intersection of the river or the main river at the intersection of the depth and shallowness of the grass nest, the water depth is moderate grass nest edge nest, the nest is not easy to be too much, two or three is appropriate. The first nest must be played more, and the nest should be replenished in a timely manner, so that the fish in the nest will not fade.

Wild crucian carp can grow to tens of grams a year, which is about 1 tael. If it is pond culture, it can grow about 150-200 grams a year. If it is cultivated in a lake with abundant natural bait and fertile water, it can grow more than 250 grams a year.

If it is a new breed, such as Xiangyun crucian carp, the largest individual can grow to about 750 grams.

Crucian carp is generally the fattest in February-April and August-December, especially in March-April, crucian carp is thick and has a lot of roe, and the taste is relatively delicious. Crucian carp is one of the more important edible fish in China, which is produced in waters all over the country, mainly in the Yellow River Basin, the Yangtze River Basin, and the Pearl River Basin.

Nutritional value of crucian carp.

1. The vitality of crucian carp is very strong, the meat is delicate, the meat is sweet, the protein contained in it is of high quality, complete, easy to digest and absorb, it is a good protein for patients with liver and kidney diseases, cardiovascular and cerebrovascular diseases, and regular food can enhance the ability to resist disease, and patients with hepatitis, nephritis, hypertension, heart disease, chronic bronchitis and other diseases can often eat.

2. Crucian carp has the effect of strengthening the spleen and dampness, appetizing in the middle, invigorating blood circulation, warming and lowering qi, and has a good nourishing and therapeutic effect on spleen and stomach weakness, edema, ulcers, tracheitis, asthma and diabetes; Postpartum women stew crucian carp soup to replenish deficiency and lactation.

Crucian carp can grow 200-250 grams a year, its growth rate is related to the feeding environment, species, bait and other factors, artificial breeding wants the growth rate of crucian carp fast, to ensure that the environmental temperature is suitable, the bait is nutritious, in addition, crucian carp is an omnivorous fish living in the bottom of freshwater, mainly inhabiting lakes, rivers and swamps, and has strong fecundity.

Crucian carp can grow 200-250 grams a year, the growth rate of the feeding environment, species, bait and other factors are related, the growth rate of different species is not the same, in addition to artificial breeding want to accelerate the growth rate of crucian carp, to ensure that the environmental temperature is suitable, the bait is nutritious.

Crucian carp is an omnivorous fish that lives in the bottom of freshwater, usually active underwater, when the water temperature is high, it will swim to the middle or pelagic layer, mainly plant food in the water, the environment is warm in spring, it will feed day and night, mainly in the morning and evening in summer, mainly in the daytime in autumn, and noon in winter.

The distribution range of crucian carp is wide, mainly inhabiting lakes, canals and swamps, among which the shallow lakes and ponds where aquatic plants grow luxuriantly are the most, the fecundity and adaptability are very strong, there are perennial production in major waters in China, and the breeding period is mainly in spring and summer from March to July.

At present, the known species of crucian carp are crucian carp, black carp and silver carp, and the crucian carp grown in each region also has its own local species, such as Pengze crucian carp in Jiangxi Province, high-backed crucian carp in Yunnan Province, and Pu'an in Guizhou.

Crucian carp and other species, among which the main breeding is heterogeneous silver crucian carp and Pengze crucian carp.

<> wild crucian carp generally grows about 1 tael a year, but the growth rate is different in different environments and regions. If it is an ordinary pond, it can grow 150-200 grams a year; In small lakes and reservoirs with abundant bait and fertile water, it can grow more than 250 grams a year.

Wild crucian carp grows relatively slowly The month is the spawning period of crucian carp, after hatching, the small crucian carp can grow to 20 grams -30 grams in winter, 100 grams -150 grams in the summer of the following year, and can grow to more than 200 grams in the winter of the following year, under normal circumstances, the weight of two winter-old crucian carp is about 200 grams -300 grams.

Although the growth cycle of crucian carp is slow, they have a strong reproductive ability, spawning can reach tens of thousands of grains at a time, and the spawning period is more than half a year, crucian carp has strong adaptability, low temperature resistance, and water temperature is ten degrees Celsius.

At the following time, they can still forage normally, and even if they are often fished, the number of crucian carp has not decreased, and it is one of the most common fish.

Spring and autumn are the most active times for crucian carp, they are foraging almost day and night, and this is also the best time to fish, usually a considerable number of crucian carp can be caught in one night, and the summer temperature is high, only in the morning and evening when it is cooler, crucian carp will come out to feed.

In winter, when the temperature drops, crucian carp are resistant to low temperatures, but their activity will still be greatly reduced, and they will only come out to feed at noon, if you want to catch more crucian carp, you need to choose the right time according to their living habits, so as to achieve twice the result with half the effort.

In general, it takes 6-7 months for crucian carp to grow. Wild crucian carp grow slowly and take a long time to grow. It takes about a year and a half to grow to 200 grams.

If you want to grow to more than 1 catty, you need to grow it for at least 5-10 years. The growth rate of artificially cultured crucian carp is relatively fast, and it can reach more than 200 grams in about half a year. Usually crucian carp weighing up to 200 grams can be marketed, so it is considered to be grown.

Crucian carp is a relatively small fish, and they don't grow particularly fast. Wild crucian carp live in rivers, ponds, lakes and other waters, and crucian carp can also be artificially farmed, which also lives in fresh water, generally in breeding ponds. Wild crucian carp and farmed crucian carp grow at different rates, so the time it takes to grow is also different.

Wild crucian carp grow at a slower rate, generally growing to 100-150 grams after one year and 200 grams after a year and a half. There are also large crucian carp that can weigh up to 1 catty, but it takes 5-10 years for wild crucian carp to weigh more than 1 catty.

The growth rate of artificially farmed crucian carp is relatively fast, and it can reach more than 200 grams in about half a year. At this point, farmers may choose to put them on the market, at which point they will not be able to continue to grow, and the crucian carp will be considered to have grown. For example, many farmers choose to release in May and go on the market around December.

Crucian carp can carry out the process of reproduction, but the first condition that needs to be met is the age condition, crucian carp can only reproduce and spawn after sexual maturity, and too small crucian carp cannot carry out the reproduction process. The age of sexual maturity of crucian carp is relatively early, and it can reproduce and spawn at the age of 1-2 years. The early-maturing crucian carp can reproduce and spawn at about 1 year of age, and the late-maturing crucian carp are basically capable of reproduction and spawning at about 2 years of age.