A fish that endures immortality: is it true that it survives 4 years away from the water?

Original title: "A fish that endures immortality"? hehe

Question: "Douz lungfish persisted for four years without water" is this true?

In a village near the Sahara Desert in Africa, the average daytime temperature is as high as 42 degrees Celsius, and only the autumn rain is briefly rainy throughout the year. In such a harsh environment, . This Douz lungfish persisted for four years without water, and finally waited for the rainy season to win a new life. http://weibo.com/p/1001643836584830077804

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fengfeixue0219 Answer:

This is a typical story with a strong "Reader's" style that "starts from the existing cases and complements the so-called 'details'".

First, let's talk about which points are real:

1 Lungfish do have this substance. Lungfish are the general name of the fish of the suborder Lungfish of the suborder Offilmed meatfish, and can be divided into Australian lungfish, American lungfish and African lungfish. Among them, there are currently four species of African lungfish, namely protopterus aethiopicus, East African lungfish (p. amphibius), African lungfish (p. annectens) and the fine-scaled African lungfish (p. dolloi）。

2 African lungfish (as well as American lungfish) do have a habit of relying on dormancy to survive the dry season. When rivers and lakes dry up, lungfish will dig holes in the silt and rely on the mixture of mucus and mud secreted on the surface of the body to form a "cocoon shell", which plays a role in protecting the fish body and reducing water dispersion. At this time, through a thin tube in the mouth, it communicates with the outside air and breathes with a swim bladder. At this time, the function of the swim bladder is very similar to the lungs of other vertebrates, which is the origin of the name "lungfish". Australian lungfish cannot sleep in the mud, but can rely on their "lungs" to temporarily move away from the water.

Let's talk about the unreliable places.

1 There is no such thing as a "Douz lungfish" in the text. If you extrapolate from the "Douz is a village in eastern Libya" and habits, the African lungfish is more likely.

2 African lungfish do not have water in the swim bladder, so there is no so-called "squeezing water out of the lung sac to quench thirst". In fact, locals catch African lungfish for food (don't ask how it works).

3 The length of dormancy of African lungfish is currently believed to be dormant for about 1 year without dying when the external environment is completely dry. The so-called "four years without dying" refers to the maximum period of dormancy, which needs to be achieved when the outside world is not completely dry. Therefore, the so-called "4 years after drying and building into the wall" in the text is unattainable.

4 The process of awakening of the lungfish in hibernation is not solely dependent on its own "digging", and the soft body of the lungfish cannot excavate the completely dry soil. In fact, the awakening of lungfish is mainly a result of the environment - when the rainy season comes, the water soaks through the soil, and the cocoon shell softens, the African lungfish can only break free.

Spit on:

1 The name "Black Horse" is the true Mary Sue....

2 What the hell is the picture? Dried cyprinids posing as lungfish??

2l (aquaculture, marine fisheries) Answer:

"As for whether you believe it or not, I believed it anyway."

——Wang Yongping

There is no water≠ dry ≠ exposure to the sun

1. Lungfish, not like in the picture, the fish on the picture should be 100% breathed with gills, what fish can not see, but I use personality to guarantee that it will certainly not be such a magical fish as said in the article. There is no such species as "Douz lungfish", which should be said according to the location of the article, so I don't know if it is correct or incorrect. There are two main species of lungfish in Africa: East African lungfish and West African lungfish. I have raised lungfish, they are cute, eat a lot, and have strict water temperature requirements;

2. In the article, the description of "lung sac" is inaccurate, and I am not quite sure what part it is. Lungfish have two sets of respiratory systems, most of which use gills to breathe in the water and bladders to breathe out of the water;

3. African lungfish do have a habit of summer sleep, used to fight against the dry and harsh African summer, it will burrow into the mud, but! It will be very deep, there is no water to survive, but the exposure to the sun will be enough... Not to mention the fish... What about people? There is also the fact that although lungfish have the habit of summer sleep, it does not mean that summer sleep can sleep. In the second year of the fourth year, I enjoyed a little bit of rainwater seeping out of the mud, and the evaporation evaporated and evaporated~ how to save it can not be saved.

4. This lungfish has a name, called "Black Horse", huh;

5. If I build a house and suddenly find a fish on the outer wall... Still alive! Why not give it a...

6. The last two answers are pure spit, the article is a good article, but it has no scientific value.

Subvert common sense Answer:

If it was just four years of being built into a wall and escaping from the water environment, I might not really believe it.

But --

Nyima built into the wall for four years and relied on her body to grind out the space, which is simply a fantasy novel.

Even if there are small cracks in the wall soil that can penetrate a small amount of oxygen and rainwater, where does the energy consumed by the body without food activity come from? The table tells me that their own stored fat can provide them with enough energy for high-intensity labor in years. Besides, you don't need water to break down fat!

Grinding hard earth walls with soft meat? Can something soft grind something hard? The diamond processing industry said that we would only use waste diamonds to grind good diamonds. Even if the adobe walls are not so hard, there is no doubt that when rubbing, there is definitely something soft that wears out a lot. According to the size of the fish in the picture, even if he grinds himself out, he can only grind a few millimeters of walls at most- unless, this fish, has cultivated to the realm of steel and iron bones.

Also, where did the ground soil go? In my experience of playing with dirt blocks as a bear child, the volume of space occupied by loose soil foam is definitely much larger than that of compacted adobe. If the fish had really done such a mysterious thing as grinding the wall with his body and had no place to deal with the ground soil foam, then he would have definitely been squeezed into flat pieces.

Therefore, in summary, this story is actually a mysterious novel of how a fish demon who has cultivated to the realm of steel and iron bones and carries a space cleverly finds a place of cultivation that is not easy to be discovered.

- Well, the novel is finished, let's forget to turn him over and start sleeping.

Paradoxian replied:

On the small encyclopedia of @fengfeixue0219, insert a foodie to the small knowledge:

Some local African residents will take advantage of this feature of lungfish, dig up lungfish in the wild and take them home, first let them spit out sediment in clear water, and then throw them into the batter. Lungfish think that the dry season is here again, and they will form a "cocoon" to sleep... This cocoon can then be grilled/fried/fried and eaten

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