In fact, there should be many answers to this question, because the growth rate of fish is different because of different growth methods and different environments.

In the water and fertilizer areas, there are many microorganisms, and fish are not short of food, so they must grow rapidly.

In areas with thin water bodies, fish will grow slowly if they lack food and have nothing to eat.

In addition, the varieties of crucian carp can also be divided into local crucian carp, Fangzheng silver crucian carp, Pengze crucian carp, Gaobei crucian carp, Xiangyun crucian carp and so on. Some of these crucian carp can grow 2 kg a year, and some may not have 1 kg in five years.

Generally, local crucian carp grow very slowly. One-year-old crucian carp may not grow up to 2 Liang at most. It is also a problem to have a kilo in five years, mainly because the wild environment is too complicated and food is scarce.

Founder crucian carp is native to founder county, Heilongjiang Province, and has the characteristics of high meat yield, cold tolerance, strong disease resistance, fast growth and large size. The biggest crucian carp can reach 3 kg, and it grows very fast.

Pengze crucian carp is native to Dingjiahu, Fanghu and Taibo Lake in pengze county, Jiangxi Province. Pengze crucian carp is large, with a maximum weight of 6.5 kg. Also known as Pengze crucian carp.

The high-backed crucian carp in Dianchi Lake is spindle-shaped. Carassius auratus originated in Dianchi Lake, Yunnan Province. It mainly feeds on humus and nutrient debris, which can clean up impurities at the bottom of the water and absorb some algae, which has a good purification effect on the water body. The largest individual can reach 3 kg.

Xiangyun crucian carp, also known as engineering crucian carp, is a triploid crucian carp successfully cultivated by China Academy of Engineering and Professor Liu Jun from the Biology Department of Hunan Normal University. The growth rate is 3-5 times that of common crucian carp, and the fry can reach more than 3 kg in that year.

In addition, when our fishing friends fish, they will think that the big crucian carp is the "engineering crucian carp". Actually, this statement is wrong. Many kinds of crucian carp have little difference from engineering crucian carp and grow very fast. Except for the slow growth of local crucian carp. Many crucian carp can grow very big.

Fishing friends, how big do you think the crucian carp over there can grow and how long it will take?

How long does it take for crucian carp to reach a catty?

First of all, there are many varieties of crucian carp, such as indigenous crucian carp, engineering crucian carp, high-backed crucian carp, silver crucian carp and so on. I will list three more common varieties.

1. The local crucian carp is the most common and has the longest growth cycle. This kind of crucian carp only grows for a year or two to a catty, which takes several years. If you catch a catty of native crucian carp in wild fishing, you can blow it with other fishermen for a whole year. This kind of crucian carp is small in size, and it is absolutely as fragrant and delicious as milk when used to stew fish soup.

2. Engineering crucian carp, also known as Xiangyun crucian carp, is a new type of triploid fish cultivated by bioengineering technology combining cell engineering with sexual hybridization. Compared with common crucian carp, it has the advantages of undeveloped gonad, strong disease resistance, tolerance to hypoxia, low temperature, wide feeding habits and easy capture, especially its fast growth rate, which is three times faster than common crucian carp. But also has many advantages in commodity characteristics. The meat yield is high, but the meat quality is loose. Some unscrupulous traders will pretend to be wild crucian carp for sale, and the price is 1 times higher than that of ordinary crucian carp. It only takes half a year for this kind of crucian carp to grow from fish seconds to a catty (when people need artificial feeding)

3. The body shape and color of crucian carp are very similar to those of common crucian carp, but the body height is obviously higher than that of common crucian carp, and the width and length are 1.9-2.4 times of its body height, and its body color is darker, and its growth speed is faster than that of native crucian carp, and the maximum individual can reach 3 kg. Crucian carp is also one of the main species in fish pond culture. Compared with engineering crucian carp, it has a short growth cycle and compact meat quality, and will be favored by many local farmers. Choose to breed crucian carp. Generally, crucian carp can weigh about one catty in less than one year when fed with artificial feed. If it takes about a year to grow wheat.

In fact, personally, if you want to decide to raise fish, you should choose silver crucian carp or engineering crucian carp. If it is fishing or fishing for local crucian carp, it is really fresh. If you keep it for fun, I suggest you don't feed it. Feed with hormones will grow so big in a short time and the meat will be loose. This soup is the same as water. Crucian carp must grow slowly, and people think it is best to eat too much meat for half a catty of crucian carp, which is too firewood!

Personal views are welcome to add ~ ~ ~

How long does it take for crucian carp to reach a catty?

There are two kinds of crucian carp, one is wild and the other is cultured. Whether it is wild or cultured, its growth rate has a great relationship with geographical location and water conditions. There is no precise definition of this.

For example, the crucian carp in the north rarely eats outdoors under the cold ice in winter because of the climate, so it grows slowly. The water surface is basically not frozen in the four seasons in the south, and the water temperature is relatively high. Carassius auratus will look for food when it is active, so it grows to a catty faster than in the north.

The water area basically depends on the size, water quality, fish density and food quantity of the water area. The quality of water quality has a great relationship with the health of crucian carp. Good health, moderate fish density and abundant food make crucian carp grow fast. If the water quality is poor, there is less food and more fish, then the natural crucian carp will grow slowly.

It takes about 5 to 7 years for wild crucian carp to grow to a catty. It is basically 6 to 8 months to raise crucian carp. Why is crucian carp raised so fast? Everyone knows about economic fish.

The best variety of crucian carp is the golden crucian carp in Surabaya, Xingyang, Henan. In spring and March, golden red fins grow in moss, but at most they are only eight Liang, which is not the eight Liang of crucian carp.

Gold, big or small, is golden only in February and March. Other months are green back, green fin, green lateral body and white abdomen.

Later, more people caught crucian carp. When washing fish, small crucian carp and fish eggs slip away along the sewer and flow into the sewage pool. Since then, there has been a black-backed gray-bellied crucian carp in the sewage ditch, weighing nearly two kilograms.

Daqing River in Luoyang, crucian carp is dry and white, with yellowish fins and reddish roots, and weighs only six Liang.

Later, it was introduced to the south, and crucian carp was cultured artificially, weighing only one or two kilograms. Its color is dirty and black, like sewage crucian carp.

The life span of wild crucian carp is six years, with less labor in the south and longer but lighter in the north of the Yellow River.

People on the banks of the Yellow River are not fishing for crucian carp, but for catfish. Stick a fishing net on the bank of the Yellow River and fuck crucian carp downstream. There is no problem with crucian carp weighing 1 for three hours.

After fishing in the fish pond, the owner of the pond bought crucian carp from the farm and put it in the pond for the payer to fish and take the fish home. More than a catty of crucian carp has been farmed artificially, but the crucian carp is still polluted.

The river and lake crucian carp, which is rolled in water, has a dark back, a white side and a white belly, and is clean and beautiful, but not as beautiful as the golden crucian carp.

The frost-free period in the south is long, and the winter break of fish is short, which is much faster than that in the north.

So how long does it take to grow to a catty? I'm not sure, but I've been overweight in the wild for more than five years.

Fishing for crucian carp is only done by city people, and rural people mostly fish under the cover of muddy water. Because clear water crucian carp see people on the shore, hide in muddy water, and catch them under the cover of muddy water. Touching without a cover is several times more fun than fishing.

Fishing is not for fish, but one of the training methods to sharpen one's temper and get rid of the bad habit of impatience.

After Wukong asks, let's leave something on it.

The growth of wild crucian carp is slow, and the growth rate is different in different food environments. Generally speaking, crucian carp can grow to about 3 in one year, 1 kg in three years, and 1 kg in two years with adequate food.

At present, there are many hybrid crucian carp, and engineering crucian carp and silver crucian carp grow rapidly. In the second half of the year, it can grow to more than one kilogram, and it can grow to about three kilograms in two years, but the crucian carp is not delicious.

It takes about 200 days for domestic crucian carp seedlings to grow into big fish. Crucian carp has strong vitality and mild temperament, and is fed with pellet feed for about 6 months. Wild crucian carp can grow to 1 in 6 months, and it takes 5-1 kg to grow to10 years.

1 wild crucian carp, that is, native crucian carp. The local crucian carp grows slowly and has many natural enemies, so the number of local crucian carp in large individuals is relatively rare.

2. The local crucian carp grows slowly, the meat is compact, the taste and nutrition are better than those of cultured crucian carp, so the price is high.

Compared with other fish, the growth rate is really slow. It takes about three years for crucian carp to grow from seedlings to150g (3 Liang).

4. The original crucian carp has strong vitality, and its physical strength is better than that of improved fish, and it will not die easily after leaving water for a period of time. Generally speaking, they just eat bait in rivers and ponds.

How young can this grow?

The growth rate of different living environments and varieties varies greatly.

This fish was caught in a wild pond on the hillside a few years ago. More than a kilo of meat is tender and fresh than three ounces on the market. The second weekend, I went and found that I was poisoned [shed tears]. I suspect that the fishing friends around me have a latent electrician [angry] expert to help me see if it is a native crucian carp.

Crucian carp grows very slowly, especially the "primary crucian carp" can grow to a catty. I wonder how many years it will take. After so many years of wild fishing, half a catty of wild crucian carp is rare, and it is even more rare to meet 1 catty of local crucian carp.

But some kinds of crucian carp can grow very big, such as engineering crucian carp and high-backed crucian carp.

Although there are many kinds of crucian carp, their living habits are basically similar. They are used to living in the lower water and belong to the bottom fish.

Wild crucian carp can grow to tens of grams a year, which is about 1 2. If it is in a small lake or reservoir with abundant natural bait and water quality, it can grow 2-3 A Liang a year. If it can grow to a catty, it is still a question whether it can grow to five years.

Although the growth of crucian carp is slow, its reproductive ability is very strong, and it usually lays 10,000 eggs at a time. Low temperature tolerance, and still have feeding ability in water temperature below 10 degrees Celsius. This is why our fishing friends can still catch crucian carp in winter fishing.

Crucian carp has strong adaptability to the environment. The protective color of its scales can change with the change of water color, and it can change into silver gray, taupe, gray, silvery white, yellow and golden yellow according to the color of water.

Even with the change of living environment, its body shape can be changed appropriately. If it lives in a narrow pond with a small range of activities, it will become shorter, wider and fatter. If it lives in flowing water, its body shape will become longer.

It is difficult for local crucian carp to grow to a catty. It's good to grow to two taels a year. In the past, no one specially raised crucian carp, so the output was too low and there was no economic benefit. However, crucian carp is very popular with people. Whether eating or fishing, it is the best fish species. Therefore, aquatic researchers began to artificially cultivate new crucian carp varieties. That is what we now call "engineering crucian carp".

If I remember correctly, the Japanese should have cultivated a new generation of crucian carp at the earliest, called "Silver Crucian Carp". The body color is silvery white, the body is slender, the scales are tight, the head and mouth are small, and it can grow to about one kilogram a year.

The earliest domestic crucian carp should be high-backed crucian carp. The female parent of Gaobei Carassius auratus is Carassius auratus from Shuangfeng Reservoir in Heilongjiang, and the male parent is red carp from Xingguo, Jiangxi. This hybrid crucian carp has strong body, wide back, thick meat, compact meat, rapid growth and strong adaptability. It can grow to more than one catty a year. Due to the genetic genes of carp fathers, individuals can be very large, which breaks through the upper limit of common carp to grow to eight or two pounds, and can grow to two or three pounds, and even some individuals can reach about six pounds. Therefore, high-backed crucian carp is widely cultivated in China and flows into natural waters.

There is also a kind of Pengze crucian carp, which is plump, silvery and soft. Breeding can reach about 821 Jin a year.

There is also a kind of crucian carp in Hubei, which can grow to about eight taels or a catty a year. Because of the low price, it is also launched in many places.

Personal experience: Among these kinds of crucian carp, native crucian carp is relatively responsible and basically in the bottom activities. Although the high-backed crucian carp and Pengze crucian carp also float, the big ones mainly move at the bottom. The local crucian carp, high-backed crucian carp and Pengze crucian carp have stable swimming layers and are relatively easy to catch. But silver crucian carp and Hubei crucian carp are hard to ponder and fish.