In the deep sea area 750 to 2500 meters from sea level, there lives an extremely terrible fish - black fork tooth fish, unlike the fish we see in daily life, it has a large stomach, terrible shape, although it is not large, the largest body length is only 25 centimeters, but it can swallow prey that is 10 times heavier than its own size! With its oversized stomach, it has been dubbed "nature's craziest predator."
<h1 class= "pgc-h-arrow-right" > black fork tooth fish</h1>
The black fork-toothed fish (also known as the black fork-toothed dragon ray, black bitch) is a middle-layer oceanic to bottom oceanic fish, often inhabiting deep-sea areas below 750 m. Feeding on fish for a living, the prey they prey is usually much larger than their own body. The body shape is elongated and flattened laterally. The head is elongated, the snout is round, the snout is longer than the diameter of the eyes, and the eyes are small. The mouth is large and expandable. The body is bare and scaleless, the tail fin is forked, the body is black or black brown, and the shape is terrible. Widely distributed in the world's tropical and extremely temperate seas, it is a small and medium-sized fish with no economic value.
<h1 class="pgc-h-arrow-right" > how strong is the stomach of the black fork tooth fish? </h1>
In 2007, a 19 cm long black fork tooth fish was found on Grand Cayman. Shockingly, this black forked mackerel also has an 86 cm long snake mackerel in its stomach, which is equivalent to four and a half times its own length, and this snake mackerel weighs 10 times that of this black forked mackerel! You can't imagine what this concept is. A person's normal meal volume, that is, one or two pounds, if the person's weight is calculated according to 100 pounds, it takes more than 500 people to eat food that is 10 times heavier than their own body. Some people may ask, will the black fork tooth fish eat so much and will not be killed? The answer is really no.
The black forked tooth fish has a very expandable stomach, like a leather ball, which can be freely contracted. When the black forked fish is empty-stomached, its shape is flat and long, similar to that of ordinary marine fish, but when the black forked fish preys on a larger prey than itself, its stomach will be propped up widely, and it will look very scary.
<h1 class= "pgc-h-arrow-right" > the crazy feeding method of the black fork tooth fish</h1>
From this discovery, we can also learn that with regard to the black fork tooth fish, its way of eating is to swallow the entire prey alive! And the prey it can swallow is twice as large as it is itself, and its mouth can open so big? Doesn't the chin dislocate? Yes, it is true that it can be stretched so wide, and the chin can indeed be "dislocated", but "dislocated" it can go back on its own. (Don't doubt your own eyes, you read that right.) When it bites its prey, the jaw can be temporarily detached (that is, we call "dislocation"),so that its oral volume can be expanded several times in an instant to facilitate the swallowing of prey larger than itself, and the final detached jaw is connected to the upper skull through a hinged structure. This extremely crazy predatory behavior actually stems from the fact that it can eat too little food.
<h1 class= "pgc-h-arrow-right" > the living environment of the black fork tooth fish</h1>
We divide the ocean according to the intensity of the light transmitted by the sun, from the surface of the ocean to the 200-meter-deep water layer, called the upper layer of the ocean, where the sunlight passes through the seawater, the water is relatively bright, the seawater is blue, it is the ideal environment for the survival and development of marine life, and the marine life is luxuriant; from 200 meters to 1000 meters deep, the water layer is called the middle layer of the ocean, where the sunlight can not all pass through the seawater, the light is very weak, the seawater is a black blue, although the number of fish living here is far less than the upper layer, but there are also more than 850 kinds, For example, eye fish, sharks, squid, etc.; from 1000 meters to 4000 meters of water, called the semi-deep sea layer, here is not aware of a little sunlight, a dark, is a dark world, no wind and waves, the water temperature is maintained at about 0 degrees Celsius all year round, this layer of animals only about 150 species, and are carnivorous animals.
It is conceivable that if the black fork tooth fish wants to live in such an environment, it must practice excellent predation skills. Therefore, once it finds that there is a prey passing by it, it will devour it at a very fast speed, and it will not care how big the prey is and whether it can eat such a problem. In short, as long as it can be caught, it will never be let go.
<h1 class= "pgc-h-arrow-right" > the death of the black fork tooth fish</h1>
Although the black fork tooth fish will not be killed, in most cases it will kill itself because of its super devouring ability. Because the food that the black fork tooth fish usually swallows is relatively large, the food is not easy to decompose by itself, and it is easy to have indigestion. The swallowed food is broken down by microorganisms in its body, producing large amounts of gas. Such as: oxygen, carbon dioxide, methane, hydrogen sulfide and so on. These gases cause the black forked fish to swell and surface like a ball, causing it to die under unadaptable low pressures. Some netizens joked: The black fork tooth fish loses in it will not fart! At first glance, it may seem reasonable, but in reality it is not.
< h1 class="pgc-h-arrow-right" > fish also fart? </h1>
I don't know if you haven't heard of it, but in fact, fish can fart. In fact, this research has been done for a long time, and there is more than one study on the farting of fish. The first to do the research were scientists at the Swedish Institute of Oceanography, which used the sound produced by herring venting bubbles in artificial containers. The results of the study showed that in the artificial container, the herring emits a series of sound pulses from the anus, and some small bubbles are also generated from the anus. In addition, the sound of herring "farting" can be heard in a range of more than one meter, and in this range, herring "farting" can be used as a communication tool when the fish are group activities. Another study was conducted by Canadian scientists, who also studied herring. Unlike the Swedish Scientists' Institute, Canadian scientists mainly study two problems:
What is the relationship between herring farting and going to the surface of the water to swallow air?
Does the herring fart play a role in reminding companions to avoid predators?
The final findings suggest:
In a short period of time, herring farts are similar, but after a long time, the number of times fish that cannot swallow air is significantly less.
When the container containing herring is poured into the shark-reared water, it does not cause an increase in the number of herring farts, which means that the farting behavior of herring has nothing to do with predation, in addition, they also found that as the density of fish increases, the number of farts per fish will also increase, which further confirms that the farting behavior of fish is closely related to its communication. As for the question of whether fish can fart, we have confirmed it from herring.
Therefore, the black fork tooth fish is actually able to fart! So why doesn't the black forktooth fish expel gas from its body through farting? This is because the gas produced in the body of the black fork tooth fish is concentrated in the stomach rather than the intestine, so it cannot be discharged at all, and even if it can be discharged, the speed is very slow, so that the black fork tooth fish can only be forced to rise out of the sea.
In this world, all living things follow the natural law of "survival of the fittest, elimination of the unfit". So dinosaurs will go extinct, giraffes will have the longest neck in the world, chameleons can change their skin color according to the environment, and black forkfish can prey in a very crazy and brutal way, and evolve such a powerful stomach structure. Each creature has its own special features, after all, it is a matter of life and death, and survival skills must be possessed.