#头条创作挑战赛 #
Introduction: What are the four big fish? Why didn't the carp of the "King of Freshwater" make the selection?
Do you know what the "four big fish" are? It is estimated that some people have not heard of the "four big fish"! Today, very few people talk about the four big fish, so it is not difficult to understand which four kinds of fish are not difficult to understand.
I remember that the texts of primary school introduced the four large fish, which are the four fish with the most extensive culture in the mainland, namely blue, grass, silver carp and bighead, that is, blue carp, grass carp, silver carp and bighead carp. So why didn't the carp, the "king of freshwater", be selected?
The most non-existent bluefish
Although in ancient times, blue fish was the first of the "four big fish", but today blue fish has become one of the least existential ones. It is also because there are fewer people farming this fish today, and it is rare in the market, so when it comes to saying that it is a four-largest fish, some people will question it.
Bluefish is a medium-sized and large fish of the family Carpinidae, the genus Cyprinidae, which often move in the middle and lower layers of the water body, mainly feeding on aquatic animals such as snails, mussels, clams, and clams.
As a carnivorous fish, because it does not like to exercise, it waits quietly in the water when it is full, so it grows fast, and its size is also large, and the large one can grow to seventy or eighty kilograms, and the largest blue fish recorded in the mainland is 114 kilograms.
Now there are fewer people in blue fish farming, also because its growth cycle is long, and it is carnivorous, the cost of breeding is high, and many farmers are not willing to farm.
The most affordable silver carp
Don't look at how many people don't like to eat silver carp now, dislike its poor meat, heavy fishy taste, and also have many fish bones, which is troublesome to eat. However, a few decades ago, silver carp was the most popular of the four large fish. At the end of the year, every household buys it in large quantities, both fresh and used to make cured fish.
Silver carp is a carp family, silver carp that mainly moves in the upper layers of the water body, this fish is lively, good at jumping, often jumping out of the water, especially in summer. However, it is not active in winter and often winters in deep water.
Silver carp is a typical plankton-eating fish, feeding mainly on plankton in the water. It is also because of this characteristic that many farmers like to breed it.
Because it can effectively remove phytoplankton from the water and play a role in cleaning water quality. In addition, its growth is fast, the breeding cost is low, and the yield is very high, which is why its price is close to the people. Many people still love silver carp farming, and it is also for this reason.
Bighead fish with an extraordinarily large head
Bighead carp is also called silver carp, in the author's hometown called it "male fish", this fish looks very similar to silver carp, but the head is much larger, so it is also called fat head fish, big head fish.
Bighead carp is a species of bighead fish in the family Cyprinidae that are often active in the middle and pelagic layers of water bodies. It is a typical plankton-eating fish that prefers to eat phytoplankton from the juvenile maturity.
This fish is widely distributed in the mainland, from Hainan Island in the south to the rivers, lakes and reservoirs of eastern China in the Heilongjiang River basin in the north. Bighead carp is popular in the north, especially in winter.
Grass carp that loves to eat feces
Among the four big fish, grass carp is currently the most photographed one, and it is also the most common freshwater fish on the market. However, many people have misconceptions about grass carp, believing that it is a fish that specializes in grazing.
In fact, grass carp also eat meat, they occasionally eat earthworms, dragonflies, etc., especially in the juvenile stage mainly eat the larvae of various insects, while grass carp also has a habit, love to eat their own feces.
Grass carp is a genus of carp fish in the family Carpaceae, which generally prefers to live in the middle and lower layers of water and near the shore of aquatic grass areas. This fish is also very lively, swims quickly, and likes to come out in groups to feed, and grabs food fiercely when feeding.
Because grass carp loves to eat all kinds of forage, has a wide range of food sources, and grows fast, has high yield and high economic value, it has become one of the four traditional freshwater farmed fish in the mainland.
Why is carp not on the list of "four big fish"?
Many people now often question that carp culture history is earlier than that of blue carp, grass carp, silver carp and bighead carp, and that the culture was wider than it was at that time. Why isn't it one of the "Big Four"?
In fact, there is an explanation among the people, saying that the name of the four big fish was roughly formed in the Tang Dynasty, but in the Tang Dynasty, it was "Li Dynasty", and "carp" and "Li" are homonymous, so carp can not be farmed, fished, let alone edible.
So the fishermen changed to other fish, and after a long period of exploration, found that the four fish of grass carp, blue carp, silver carp and bighead carp are most suitable for polyculture, can make full use of different spaces in the water body, and they will not interfere with each other, there is no hybridization between species, so they are called "four big fish".
But some netizens questioned this, and some experts explained that carp is not one of the four big fish, because carp is a fish with strong reproductive ability and low requirements for reproductive conditions, and it can basically naturally reproduce offspring in the water body, so it cannot be called "domestic fish".
However, grass carp, silver carp, blue carp and bighead carp are very harsh on breeding conditions, and if they are cultured in reservoirs and ponds, they cannot naturally reproduce. Moreover, these fish farmed in the past were harvested in wild rivers and lakes, and then put into reservoirs and ponds for culture.
Finally, "Asian carp" is flooded abroad, and some people think they refer to carp. But in fact, Asian carp is not a fish, but a collective term for carps, such as grass carp, silver carp, bighead carp, blue carp and carp, etc. are all carps, they all belong to Asian carp.
Conclusion
Well, now that everyone understands which four big fish they are, it should also be clear why carp is not the "four big fish".
However, the times are developing, the structure of fish farming has also undergone great changes, and everyone's dietary preferences have also changed, and now among the four large fish, that is, grass carp and bighead carp are still common, such as silver carp and blue carp are rare in the market.
So if you select four big fish in the future, it is estimated that they will have no chance. If you had to choose the four big fish of the new era, which four would you choose? Welcome to leave a message to discuss!