CATDOLL : CATDOLL: How big can a wild black carp grow? How many years does it take for a black carp to grow to 100 kilograms?

I remember that in 1999, there was a serious summer drought in my hometown. As it was the critical period for the growth of the second-season rice, in order to protect the seedlings, each village mobilized all water-pumping equipment, including diesel pumps, electric pumps, and even human-powered water wheels used in the 1960s and 1970s that had been gathering dust for more than a decade.

Because the drought was very serious at the time and there was no abandoned land at all, the water consumption was very large, so that the reservoir, which had not been opened on a large scale for more than 20 years, was almost at a dead water level. When the water pump lift was not enough, the villagers had to carry water to irrigate the crops.

The author clearly remembers that several blue carps weighing about 100 kilograms were caught that year. Because the reservoir was built along the valley and far away from the village, every time I passed by the dam, waves would occasionally appear in the water even when there was no wind. This phenomenon was once said to be a "water monster" in the reservoir (in fact, this is also the reason why adults scare children not to go swimming).

From the author's personal experience above, it is not difficult to see that it takes about 20 years for a black carp to grow to 100 kilograms, and it can grow 5 kilograms per year on average. This was confirmed by a 218-kilogram black carp caught in Jinniu Lake, Liuhe District, Nanjing in 2005. The data showed that the black carp was 186 centimeters long and at least 40 years old, which can be called the "giant" and "longevity star" of the black carp world. Let's learn some basic knowledge about black carps.

herring

Black carp belongs to the genus Black carp of the Cyprinidae family and is the only species under the genus. It is a fish native to my country's freshwater basins and is mainly distributed in the middle and lower reaches of the Yangtze River and the plains to its south. It is the main fishery resource and breeding object in the middle and lower reaches of the Yangtze River and is also distributed in other major water systems in my country.

Because of its large size and omnivorous nature, black carp has been introduced to other countries for breeding. The carp disaster in the Mississippi River Basin in the United States that we often see on the Internet is actually referring to black carp.

From the perspective of attributes, black carp belongs to the Cyprinidae family of the order Cypriniformes. It is named for its bluish body color. At the same time, due to different names in different places, it has different names. For example, Anhui calls it "wuhun" and "heihun", and the Northeast calls it "qinghun". In addition, because black carp mainly lives in the lower layer of waters, it feeds on large field snails, snails, river clams, and small fish and shrimps at the bottom, it is also called "screw mix" or "snail green".

Judging from the distribution of black carp in various regions of my country, the reason why it is so limited in the north is that adult black carp mainly feed on snails, and due to climate and other factors, there are fewer snails in the north, which limits the distribution of black carp. This also shows that animals at a higher level in the food chain will also be affected by the environment.

Black carp is slightly cylindrical in shape with a flat and round belly. It is large and grows relatively fast, and can grow about 5 kilograms a year. Because black carp grows fast and is easy to raise, it is widely cultivated in my country and has also been introduced to the southern United States.

However, because black carp, like many migratory fish, has the habit of swimming upstream to spawn in rivers, it has gradually spread in the Mississippi River basin in the United States (with a basin area of ​​1.151 million square kilometers), posing a great threat to other native fish. In order to eliminate the rampant black carp, the local government in the United States once offered a reward of 100 yuan per fish, encouraging the public to participate in catching black carp and maintaining the original ecology of the river. In my country, the average retail price of black carp is at least about 10 yuan per catty.

Summarize

Among the "four major fishes" in my country, black carp is the largest and has the longest lifespan. Once it has grown in the water for more than ten or twenty years, its weight is about several dozen to hundreds of kilograms. At this time, it is difficult for one person to catch it. For example, the 1.86-meter-long and 218-kilogram black carp caught in Nanjing Jinniu Lake mentioned above was caught by several people driving several small boats and using nets for nearly six hours.

Although black carp grows quickly, my country belongs to the monsoon climate zone, with large interannual variations in rainfall, making floods and droughts prone to occur. Therefore, except for some large reservoirs where it is not easy to have obvious water level differences, which are conducive to the growth of black carp, most other small and medium-sized reservoirs are basically fished once every three to five years, and it is rare to see black carp weighing over 100 kilograms.

Black carp grows fast and can grow up to 140 catties in general. In 2005, a black carp caught in Nanjing Jinniu Lake was 186 cm long and weighed 218 catties. It is ferocious and large in size. It is a carnivorous fish that lives on the bottom and likes to eat snails. It matures at 4-5 years old and usually breeds in rivers with high flow rates from April to July.

1. How much can black carp grow to?

1. Black carp grows very fast, and can grow up to about 140 catties under normal circumstances. The most common black carp in the Yangtze River weighs about 30-40 catties. In 2005, a black carp caught in Nanjing Jinniu Lake was 186 cm long and weighed 218 catties. It is said to be about 40 years old.

2. Black carp is relatively ferocious in nature and relatively large in size. It is a carnivorous fish that lives on the bottom and particularly likes to eat snail meat. When it is artificially bred, it is mainly fed with granular plant bait.

3. Black carp has different food requirements in different growth stages. Black carp fry mainly feed on zooplankton; black carp juveniles mainly feed on benthic animals, dragonfly larvae, etc. When black carp grow up, they are mostly fed with silkworm pupae, corn, bean cakes and bean dregs.

4. Black carp reaches sexual maturity at the age of 4-5 years. They usually reproduce in the main stream of rivers (places with relatively high flow rates) from April to July. After reproduction, they usually concentrate in river bays and lakes connected to the river for fattening. In winter, they will go to deep water areas to hibernate.

2. How many years does it take for black carp to grow to 100 catties?

1. It takes about 10-15 years for black carp to grow to 100 kilograms. Black carp has a cylindrical body and a relatively flat and round belly. It is relatively large in size and grows relatively fast. It can grow about 5 kilograms a year.

2. Choose a place with sufficient water source, unpolluted water quality and rich feed resources for breeding. The fish pond needs to be cleaned and disinfected before breeding. After the pond is cleaned, drain the pond water and inject new water. Wait until 7-10 days before stocking, and apply an appropriate amount of organic fertilizer to cultivate fertile water.

3. When choosing black carp fry, choose healthy, disease-resistant and disease-free fry. The specifications of the fry should be as uniform as possible, which is convenient for breeding and management. Before stocking, they should be soaked with drugs, and then tested. After the trial breeding is successful, they can be stocked. It is better to choose to stock when the weather is clear, and the stocking density should also be reasonable.

4. After feeding the black carp, the remaining feed residues should be cleaned out in time to avoid water pollution. When the pond water is lacking oxygen, the aeration equipment should be turned on in time to add oxygen to the water. The water should also be changed regularly, and only 1/3 of the total water volume of the pond should be changed each time.

How much can a wild black carp grow to? How many years does it take for a 100-jin black carp to grow?

Black carp belongs to the genus Black carp of the Cyprinidae family and is the only species in the genus Black carp. It is a fish native to my country's freshwater basins and is mainly distributed in the middle and lower reaches of the Yangtze River and the plains to its south. It is the main fishery resource and breeding target in the middle and lower reaches of the Yangtze River. It is also distributed in other major water systems in my country. Because of its large size and omnivorous nature, black carp has also been introduced to other countries for breeding. The carp disaster in the Mississippi River Basin in the United States that we often see on the Internet is actually referring to black carp.

From the perspective of attributes, black carp belongs to the Cyprinidae family of the order Cypriniformes. It is named for its bluish body color. At the same time, due to different names in different places, it has different names. For example, Anhui calls it "wuhun" and "heihun", and the Northeast calls it "qinghun". In addition, because black carp mainly lives in the lower layer of waters, it feeds on large field snails, snails, river clams, and small fish and shrimps at the bottom, it is also called "screw mix" or "snail green".

Judging from the distribution of black carp in various regions of my country, the reason why it is very limited in the north is that adult black carp mainly feeds on snails, and due to climate and other factors, there are fewer snails in the north, which limits the distribution of black carp. This also shows that animals at a higher level in the food chain will also be affected by the environment. Black carp is slightly cylindrical in shape and has a flat and round abdomen. It is large in size and grows relatively fast. It can grow about 5 kilograms a year. Because black carp grows fast and is easy to raise, it is widely cultivated in my country and has also been introduced to the southern United States.

However, because black carp, like many migratory fish, has the habit of swimming upstream to spawn, it has gradually spread in the Mississippi River Basin (a basin area of ​​1.151 million square kilometers), posing a great threat to other native fish. In order to eliminate the rampant black carp, the local government of the United States once offered a reward of 100 yuan per fish to encourage the public to participate in the action of catching black carp and maintaining the original ecology of the river. In my country, the retail price of black carp is at least 10 yuan per catty. Among the "four major carps" in my country, black carp is the largest and has the longest lifespan. Once it has grown in the water for more than ten or twenty years, its weight is about dozens to hundreds of catties. At this time, it is difficult for a black carp to be caught by one person.

Although black carp grows quickly, my country belongs to the monsoon climate zone, with large interannual variations in rainfall, making floods and droughts prone to occur. Therefore, except for some large reservoirs where it is not easy to have obvious water level differences, which are conducive to the growth of black carp, most other small and medium-sized reservoirs are basically fished once every three to five years, and it is rare to see black carp weighing over 100 kilograms.

Black carp is one of the "four major fishes" in my country. Because of its delicious meat, few and large bones, and high protein content (higher than chicken), it has become one of the most important economic fish in my country. Generally speaking, wild freshwater fish in my country are small in size. If you catch or fish a large fish weighing dozens of kilograms, it is already a rare sight.

herring

Black carp is a fish native to my country's freshwater basins. It belongs to the genus Black Carp of the Cyprinidae family, and the key is that it is the only species in the genus Black Carp. Because of its omnivorous diet (juvenile stage) and large size, it has been introduced into many countries for artificial breeding. In the so-called "American carp flooding", the most troublesome thing for them is actually the black carp. It has a ferocious personality and a large size. It is a carnivorous fish that lives on the bottom and especially likes to eat snail meat. It matures at 4-5 years old and generally reproduces in places with higher flow rates in rivers from April to July.

herring

1. How much can black carp grow to?

1. Black carp grows very fast, and can grow up to about 140 catties under normal circumstances. The most common black carp in the Yangtze River weighs about 30-40 catties. In 2005, a black carp caught in Nanjing Jinniu Lake was 186 cm long and weighed 218 catties. It is said to be about 40 years old.

2. Black carp is relatively ferocious in nature and relatively large in size. It is a carnivorous fish that lives on the bottom and particularly likes to eat snail meat. When it is artificially bred, it is mainly fed with granular plant bait.

3. Black carp has different food requirements in different growth stages. Black carp fry mainly feed on zooplankton; black carp juveniles mainly feed on benthic animals, dragonfly larvae, etc. When black carp grow up, they are mostly fed with silkworm pupae, corn, bean cakes and bean dregs.

4. Black carp reaches sexual maturity at the age of 4-5 years. They usually reproduce in the main stream of rivers (places with relatively high flow rates) from April to July. After reproduction, they usually concentrate in river bays and lakes connected to the river for fattening. In winter, they will go to deep water areas to hibernate.

herring

2. How many years does it take for black carp to grow to 100 catties?

1. It takes about 10-15 years for black carp to grow to 100 kilograms. Black carp has a cylindrical body and a relatively flat and round belly. It is relatively large in size and grows relatively fast. It can grow about 5 kilograms a year.

2. Choose a place with sufficient water source, unpolluted water quality and rich feed resources for breeding. The fish pond needs to be cleaned and disinfected before breeding. After the pond is cleaned, drain the pond water and inject new water. Wait until 7-10 days before stocking, and apply an appropriate amount of organic fertilizer to cultivate fertile water.

3. When choosing black carp fry, choose healthy, disease-resistant and disease-free fry. The specifications of the fry should be as uniform as possible, which is convenient for breeding and management. Before stocking, they should be soaked with drugs, and then tested. After the trial breeding is successful, they can be stocked. It is better to choose to stock when the weather is clear, and the stocking density should also be reasonable.

herring

4. After feeding the black carp, the remaining feed residues should be cleaned out in time to avoid water pollution. When the pond water is lacking oxygen, the aeration equipment should be turned on in time to add oxygen to the water. The water should also be changed regularly, and only 1/3 of the total water volume of the pond should be changed each time.

Among the four major carps, black carp has the longest lifespan and the largest body size. Once it weighs over 100 kilograms, it has almost no natural enemies (it is difficult for one person to catch it). However, relatively speaking, in my country's waters, it is not easy for a fish to weigh over 100 kilograms.

The four major carps are common fish in our daily life, rich in nutritional value and very popular among ordinary consumers. According to relevant literature, the four major carps refer to black carp, grass carp, silver carp and bighead carp, among which the number of black carp farmers is relatively small. Black carp in my country is mainly distributed in the area south of the Yangtze River, and feeds on small river clams and snails in the water. With the continuous development of the times, the number and scope of black carp farming in my country are significantly reduced.

Black carp is large, thick, delicious, has few bones, and is easy to eat. It is the species with the highest nutritional value and the best meat quality among the four major carps. Studies have shown that black carp contains trace elements such as protein, vitamins, and zinc, which can improve the body's ability to prevent and resist diseases and improve human functions. Black carp is an important species in freshwater fish farming in my country. It has won the favor of farmers and consumers due to its fast growth rate and high price.

Black carp should be the brilliant fireworks in fishery farming, but unfortunately the farmers are eager to cash in.

Compared with other fish, the breeding cycle of black carp is long and the cash-in cycle is long. Black carp can grow 0.4 catties in one year, 4 catties in two years, and about 15 catties in three years. The price of black carp is positively correlated with its weight. The heavier the weight, the higher the price. If you want to eat 20 catties of black carp, you have to raise it for at least four years. The long breeding cycle means a long cash-in cycle and a slow return on investment.

A long breeding cycle means high investment costs and increased risks. A large amount of feed is needed in the breeding process of black carp, which is a considerable expense for fishermen. If a disease occurs during the three-year breeding process of black carp, it will be a disaster, and farmers cannot afford such a big risk.

Although black carp has many good qualities, its target audience is small.

Although black carp contains a variety of nutrients, it is too big. The size of black carp is too large to meet the needs of consumers in the market. In the market, fish is generally consumed at banquets or family gatherings, but due to its large size, black carp cannot meet the market consumption needs. A single family can only choose 3-5 jin of fish at most, and black carp is far beyond the standard.

Some people may suggest that herrings can be sold in advance. There is indeed no problem with selling in advance, but the nutritional value and taste will be greatly reduced. If farmers sell herrings in advance, it is equivalent to destroying the herring farming signboard and exhausting the pond, which is not the best choice.

Black carp grows fast, but it takes a long time to grow to 100 kilograms.

In 2008, a 1.5-meter-long black carp weighing about 200 kilograms was caught in Vietnam. According to local people, it can live for at least 40 years. Someone caught a 110-kilogram black carp in our local reservoir. According to the construction time of the reservoir, it is estimated that it will take at least 15-20 years. Black carp is a well-deserved giant in freshwater fish farming, but as the consumer population decreases, the number of black carp farmers will also decrease.

Black carp farmers need to learn to change. On the one hand, they need to try other fish farming to expand sales channels; on the other hand, they need to extend the black carp farming industry chain, avoid risks in the black carp farming process, and try to avoid losses. In any case, they need to persist in doing a good job in black carp farming, improve farming technology, and do a good job in black carp market analysis.