CATDOLL : CATDOLL: American "catfish" invades China, producing 6 million cats in one litter. Why do experts say it is a good thing?

The American "duck-billed fish" invaded China and produced 6 million eggs in one litter. Why do experts say this is a good thing?

The development of globalization has brought many opportunities to many countries. With rapid exchanges and communication, the economic development of various countries has been rapid.

As early as the last century, experts from various countries were studying species from other countries and introducing them to become major domestic economic species.

No matter which country it is, there will be a large number of alien species, such as the British hairy crab, the German crayfish, the Chinese bullfrog, tilapia, etc.

Most alien species were thought to bring good benefits, but in the end they multiplied in large numbers and continuously invaded the local ecological environment, causing ecological destruction and bringing huge losses.

Some time ago, a fishing enthusiast caught a strange fish. Its appearance was weird, especially its head. From the overall perspective, it looked like a mutated fish.

This strange fish is actually called "duck-billed fish" by most people. This fish is native to the Mississippi River in the United States, and its scientific name is spoonbill sturgeon.

The reason why it is called the duck-billed fish is because the organs on its head are the same as those of the platypus, which are flat and long, while its body parts are different from those of normal fish.

According to information, this angler caught the fish in the lower reaches of the Yangtze River, and it attracted a lot of onlookers when it was caught.

In fact, the platypus was introduced as early as 1988. At that time, experts believed that this giant freshwater fish had very good genes and wanted to breed it into an economic species.

This fish has the same reputation as the Chinese sturgeon and the Russian sturgeon, and has a very high utilization value. An adult duckbill fish can grow to at least 2 meters and weigh up to 100 kilograms.

This is an alien economic species that has strong adaptability and its reproductive capacity is the best among fish. It can produce 6 million eggs in one litter.

At present, there are many breeding bases in my country. The duck-billed fish is not only edible, but also kept in aquariums.

It’s just that due to people’s free-range breeding and the escape of duck-billed fish from the duck-billed fish breeding bases around the rivers, many duck-billed fish have come into China’s rivers.

Typically, invasive species cause huge economic losses as they wreak havoc on the local ecology and take over the environment of native species.

But since the duck-billed fish can grow so big and is stronger than native fish in every aspect, wouldn't its invasion of China have any other impacts?

It is true that duck-billed fish have good genes, but in fact, they feed on plankton all their lives, and of course some crustacean species are also on their menu. In other words, duck-billed fish are slightly milder than those large and ferocious carnivorous fish, so to a certain extent, they will not have much impact.

In addition, duck-billed fish are quite picky about their living environment. If duck-billed fish can appear in the Yangtze River at this time, it means that the river water quality is good and many fish can survive. In recent years, China has achieved remarkable results in river management, and fish can live freely in the water.

The original intention of the duck-billed fish was to be used as an economic species. This kind of fish is basically not seen in the market, but only in some high-end restaurants. According to our understanding, the duck-billed fish has delicious meat, and the protein and amino acids it contains are in line with human healthy diet. Not only that, it can be used to make caviar, and its price is 200-300 yuan per kilogram. If it is used as an ornamental fish, a duck-billed fish less than 20 centimeters in length costs 40 to 50 yuan. Therefore, even if the duck-billed fish comes to various parts of China, or even floods, there is no need to be afraid at this time. One person and a pair of chopsticks can handle it. By then, the fish that can grow to 100 kilograms is estimated to grow less than 10 kilograms in China.

In fact, invasive fish like the platypus are very common in recent years, but we Chinese can't get enough of fish.

We are used to eating local crucian carp, carp, grass carp, etc. At this time, if we can change to other fish, it will be a good choice. In this regard, have you seen duck-billed fish in the wild? Welcome to discuss.

Because the Yellow River is currently seriously polluted, the living environment of the duck-billed fish is relatively demanding, and its requirements for water sources are also quite high. Therefore, once the duck-billed fish survives and multiplies in the Yellow River, it can also mean that the water level of the Yellow River has improved.

Because the meat of this duck-billed fish is very delicious and can provide a large amount of fish for our people, experts say this is a good thing.

Because this kind of fish is very delicious, if it is released into some rivers to grow freely, it will be eaten by many diners, and the food pressure on our country will also be alleviated.

High-quality freshwater fish

High-quality freshwater fish

High-end freshwater fish. Nowadays, many people choose to eat fish. Fish meat is very nutritious. Some freshwater fish can be farmed. So do you know what high-end freshwater fish there are? Below I have compiled some relevant knowledge. Let's take a look.

High-end freshwater fish 1. Arowana

Reason for the list: Class A protected animals under the Washington Convention

Representative fish species: Red Arowana, Golden Arowana

Second, Thai tiger fish

Listed on the list: It has been listed as a national protected animal in Thailand and is prohibited from export

Representative fish species: Thai tiger

Third, fish

Reason for the list: A shark species that appeared in the Jurassic period of the Mesozoic Era (about 180 million to 140 million years ago).

Representative fish species: Crown black and white fish, emperor fish

4. Ghost Rocket

Reason for the list: Long mouth, wide fins, and very beautiful changes in individuals

Representative fish species: Ghost rocket fish

5. Piranha

Reason for the list: Sharp teeth, attacks full of violent aesthetics

Representative fish species: Rouge Piranha, Golden Brandy Piranha

High-end freshwater fish 2 Chinese sturgeon

The Chinese sturgeon belongs to the Acipenseridae family and is also a type of sturgeon. In summer and autumn, the Chinese sturgeon living in the shallow waters outside the Yangtze River estuary returns to the Yangtze River, and after more than 3,000 kilometers of upstream fighting, it returns to the Jinsha River to spawn and reproduce. After the fry grows to about 15 cm, they are taken to live in the open sea. In this way, they are born in the upper reaches of rivers and grow in the sea for generations. Please note that the Chinese sturgeon is known as a living fossil and is known as the "giant panda in the water". It is a first-class protected wild animal in China. Protecting wild animals is everyone's responsibility!

Platypus

The scientific name of the duck-billed fish is Acipenser americanus. It is native to the Mississippi River Basin in the United States. It is a large freshwater economic fish and a rare sturgeon that has lived on Earth since 300 million years ago (the dinosaur era). Its body is bare, moist and scaleless, and its snout is spoon-shaped, resembling a duck's bill, so it is also called the duck-billed sturgeon.

Yangtze River Shad

The Yangtze River shad is produced in the lower reaches of the Yangtze River in China. The best shad is found in the Hengjiang River area from Dangtu to Caishi. It is known as a treasure from the waters of the south of the Yangtze River. It was used as a tribute in ancient times and is a rare and precious economic fish in China. The shad is as famous as the pufferfish and the knife fish, and is known as the "Three Fresh Foods of the Yangtze River". However, due to environmental pollution and overfishing, wild Yangtze River shad has been extinct for more than 30 years. Now only farmed Yangtze River shad is sold in the market, and the taste is naturally not comparable to that of wild shad.

Yangtze River Knife Fish Pants

Knife fish is known as the "first delicacy of the Yangtze River". In March and April every spring, knife fish enter lakes, tributaries or the main stream of the Yangtze River to spawn. At this time, knife fish is the most delicious, with tender meat that melts in the mouth and a slight fragrance. Authentic Yangtze River knife fish has small eyes, yellow back, bright white scales, high gloss, and a round body with a belly, and the whole is white and translucent.

Yangtze River Dolphin

"When mugwort is all over the ground and reed shoots are short, it is the time when pufferfish are about to come out." Pufferfish are distributed all over the world, but the most praised one is undoubtedly the Yangtze River pufferfish. Although pufferfish is extremely poisonous, its meat is as white as jade and extremely delicious. It is said that after eating pufferfish, King Fuchai of Wu used "Xishi milk" to describe its deliciousness. "Eating pufferfish at the risk of death" is by no means an empty statement. The best pufferfish, like the best knife fish, is best eaten before Qingming Festival. At this time, the burrs on the pufferfish skin are still very soft, rich in gelatin, and very soft and glutinous. There are many ways to eat pufferfish, sashimi, braised, and thick soup, each with its own flavor. No wonder there is a saying that "once you have eaten a bite of pufferfish meat, you will never want to eat any fish in the world again."