Grilled eels are basically eaten by everyone, and there is a more expensive grilled eel that is made of eight-eyed eel.
In fact, the eight-eyed eel is not an eel, and the difference between them is even greater than the difference between humans and chimpanzees.
<h1 class = "pgc-h-arrow-right" > eight-eyed eel, scientific name lampetra japonicum( lampetra japonicum).</h1>
It is not an eel, but belongs to the general order of jawless, round mouth, lamprey, lamprey, lamprey, and lamprey.
Its gills have only seven small round holes, which belong to a very primitive structure and are very similar to the shape of the eyes, so it is also called the eight-eyed eel.
Its mouth structure is also very simple, no chin, only a simple round hole, the edge of the hole is covered with teeth, and the middle of the hole has a tongue that is also full of fangs.
Although such a mouth cannot be chewed, it can be very effective at sucking blood and eating meat. Adult lampreys prefer to parasitize other fish, using the sharp teeth on their tongues to scrape the flesh, suck blood, and devour muscles.
The mouth of the lamprey eel secretes antithrombin, allowing them to drink the blood of the host in a free and refreshing way, and the parasitic fish are slow to grow and weak, even the sea overlords such as sharks are not spared.
Lamprey eels are migratory fish that breed in fresh water, and during mating the males suck the females with suction cups in their mouths. Females ovulate, males instill, and die after laying 80,000-100,000 eggs.
After twelve days, the eggs hatch, and the juvenile eels have a completely different form from that of adult lampreys, with no eyes, no suction cups and sharp teeth, and look very similar to Wenchang fish. It is about 10 mm long and is called sand cryptozoan.
For more than three years, the lampreys were in juvenile states, during which time they did not suck blood. Just hide in the sand under the water and eat some food crumbs and algae. People and animals grow up harmlessly.
Then they begin to metamorphose, and the process of metamorphosis is similar to the evolution of invertebrates to vertebrates, and the eyes and teeth also grow in the process.
<h1 class="pgc-h-arrow-right" > followed by the popular "How to Do It" session</h1>
Lampreys can grow up to more than a meter long, with an average length of 30-60 cm. Since they are cartilaginous fish, they have no hard spines and only delicious crisp bones all over their bodies. And the meat is delicious and tender. Rich in unsaturated fatty acids and vitamins, it is a traditional delicacy.
I first met lamprey in the novel The Count of Monte Cristo. In the feast of sixty-three chapters of the novel, the count introduces the guests to two fish on the table, one sturgeon from the Volga River in Russia and one lamprey from Lake Fuchal in Italy. When there is no airplane, the two fish that can eat fresh in France explain what is forced.
Even in England, the home of dark cuisine, lamprey is a popular delicacy. William the Conqueror's son Henry I (1068-1135) died of indigestion after eating too many lampreys.
The traditional food Looking Up at the Stars is also made with lamprey eels, the picture shows a pie made of ordinary fish, and the lamprey version please use your imagination.
<h1 class= "pgc-h-arrow-right" > lamprey is one of only two species of fish without a jaw</h1>
The other is the hagfish, which can be introduced again next time you have the opportunity.
During the Devonian Period, lampreys and their close relatives, the beetle, filled the ocean, but 360 million years ago, at the end of the Devonian, all the gill fish disappeared
Earth then experienced four more mass extinctions, and the eels and hagfish of the orbill order survived tenaciously. Only lampreys still retain the structure of their bodies from more than 300 million years ago.
Lamprey eels only have a simple cartilage structure on the back cord, which can be said to be the simplest spine, and now the hawkeye spine has been basically degenerated.
When Mr. Darwin wrote The Theory of Evolution, he probably hadn't studied this "stubborn" guy.
<h1 class = "pgc-h-arrow-right" > super adaptability has brought the tenacious vitality of the lamprey eel</h1>
After the European lamprey invaded the Great Lakes region of the United States in the 1950s, it dealt a devastating blow to local fish. People have tried many methods, including poisoning young fish with drugs, etc., and the effect is very inconspicuous.
Later studies have found that the juveniles of lamprey eels release pheromones that guide females to spawn. By mimicking juvenile pheromones, many females were trapped and the number of lamprey eels was successfully reduced.
But in both Europe and Asia, the lamprey is endangered due to overfishing.
Now China has begun to artificially cultivate lamprey eels, and the yield and quality are good.
<h1 class="pgc-h-arrow-right" > concluding remarks:</h1>
The lamprey eel comes from the distant Devonian Period, has gone through a long period of 360 million years, and still lives tenaciously on Earth. Whether it is from the perspective of maintaining biodiversity or from the perspective of scientific research, we should protect them well.
Thank you for watching.
"The Two-Type Posture of the Japanese Lamprey Eel"
"Important Progress made in the study of lamprey fossils"
Advances in Genetic Diversity and Evolution of Lamprey Eel
Artificial breeding method of wild Northeast lamprey