Why do most deep sea fish have huge mouths?

Because of the harsh environment of the deep sea, the more mouths you have, the more food you can eat in order to survive.

Deep-sea fish are carnivorous fish, and their food** mainly comes from the upper seas. Deep-sea fish are characterized by their large mouths, because food in the deep sea is scarce, and once they touch food, the larger the mouth, the more food they eat in one bite, and the greater the chance of survival.

This is because deep-sea fish eat small foods, and a big mouth means they eat more.

In order to hunt, deep-sea fish are mostly carnivorous fish, and their mouths are large enough to eat better.

Such a huge mouth is extremely beneficial for eating.

The bigger the mouth, the more food you eat in one bite and the better your chances of survival.

Their food** comes mainly from the upper seas.

The mouth is bigger and you can eat better.

This marine fish with a very long mouth is the warped red fish.

The redfish is a species of fish in the family Cyprinidae. The body is large, slender, flattened, and willow-shaped. The back of the head is straight, and the back of the head is raised. In the upper position of the mouth, the jaw is thick and sharply upturned, and it is erected in front of the mouth, so that the mouth cleft vertically. The eyes are large and round. The scales are small.

It is a large medium- and upper-water freshwater fish that rotates through the mountains, and is fast-moving, good at jumping and jumping, irritable and easily frightened. It grows rapidly, it is a ferocious carnivorous fish that takes live fish as the staple food of the manuscript cluster, and the plankton and aquatic insects are the main food at the seedling stage, and more than 50 grams mainly swallow small fish and shrimp, and also swallow a small number of young plants, which has high economic value.

This marine fish with a very long mouth is the warped red fish.

The redfish is a species of fish in the family Cyprinidae. The body is large, slender, flattened, and willow-shaped. The back of the head is straight, and the back of the head is raised. In the upper position of the mouth, the jaw is thick and sharply upturned, and it is erected in front of the mouth, so that the mouth cleft vertically. The eyes are large and round. The scales are small.

It is a large freshwater economic fish in the middle and upper pelagic fields, which is fast-moving, good at jumping, irritable and easily frightened. Its growth is rapid, it is a ferocious carnivorous fish that feeds on live fish, the seedling stage is based on plankton and aquatic Kunxiang insects as the main food, more than 50 grams mainly swallow small fish and small shrimp, and the young banquet mu also swallows a small number of young plants, which has high economic value.

Scientists have discovered that the deep sea is not as barren and lonely as people think. Under the extreme pressure of the deep sea, there is still a world full of life.

On the surface of the earth, peopleThe atmospheric pressure we are subjected to is 1 atmosphere, which is 1 kilogram per square centimeter. The density of water is greater than that of air. If a person dives below sea level, the pressure of the sea increases by about 1 atmosphere for every 10 meters he sinks.

In the vicinity of the Galapagos Islands seafloor hydrothermal vents, where the pressure of the sea water reaches 250 atmospheres, equivalent to more than 250 kilograms per square centimeter. Scientists have analogized that such tremendous pressure is equivalent to putting an elephant on your toenail cover。The deep sea (often defined as the ocean at a depth of 200 meters below sea level) accounts for 2 3 of the habitable habitat on Earth, and the deep-sea environment is extremely harsh.

In the dark, icy depths of the ocean, the pressure of the sea is huge enough to compress a polystyrene foam cup to the size of a thimble.

The earliest research on the adaptability of marine organisms to pressure began in the late 70s of the 20th century, when scientists compared the proteins of shallow-water fish with deep-water spiny fish. Some scientists have also discovered that the key to the extreme stress of deep-sea animals is that they have a substance called lactate dehydrogenase (LDH) in their bodies - the LDH of Qixiao shallow-water fish can only adapt to lower pressures at depths of less than 500 meters; In contrast, the LDH of deep-sea fish is able to adapt to the enormous pressures of the sea at greater depths. At the same time,Piezolates were discovered to help deep-sea organisms adapt to stress, which effectively prevents the distorting effects of seawater pressure on proteins.

In addition, scientists have studied a molecule called trimethylamine oxide (TMAO) that shows:When TMAO is added to fish tissue samples, it can have a high and stable effect on proteins that are subjected to high pressure. Scientists have found TMAO in sharks, bony fish, crabs, and shrimp. In fact,It is also this substance that gives fish and shrimp a fishy smell

Scientists believe that the study of deep sea exploration can give us more insight into how marine life responds to the changing outside world. For the creatures that live in the ocean, since there is no way to avoid and escape these changes, they must learn to cope with and adapt to these changes.

Here are 12 perspectives for you.

Shark. 9% of the results mentioned.

Sardine. 9% of the results mentioned.

Salmon. 9% of the results mentioned.

Whale. 9% of the results mentioned.

Tuna. 9% of the results mentioned.

Whiting. 9% of the results mentioned.

Conger. 8% of the results mentioned.

Treasure fish. 8% of the results mentioned.

Anchovy. 8% of the results mentioned.

Sea cucumber spots. 8% of the results mentioned.

Great Napoleon wrasse. 7% of the results mentioned.

Sea bass. 7% of the results mentioned.

Common deep-sea fish in the market are: grouper, treasure fish, large wrasse, small wrasse, longevity fish, opium fish, sea cucumber spotted, cod, sardines, sharks, whales, salmon, tuna, sea bass, saury, moray eel, mackerel, pomfret, dace, anchovies, horse noodles, halibut, tuna, sailfish, Chilean sea bass.

Deep-sea fish live in dark areas below the ocean's translucent layer, and have evolved to adapt to stressful, cold, and dark environments. Lantern fish is by far the most common deep-sea fish, and other deep-sea fish include torch fish, cigar dharma shark, diamond fish, anglerfish, viper fish, etc.

The body is mostly flat, and the eyes are long on the back (top of the head).

Deep-sea fish. Why can the class withstand such tremendous pressure on the seabed?

It turns out that deep-sea fish adapt to the environment of its body.

Physiology. A lot has changed. These changes are reflected in the muscles and bones of deep-sea fish. Due to the tremendous water pressure of the deep-sea environment, the bones of the fish become very thin; And it's easy to bend;

Muscle tissue. Becomes particularly flexible, fibrous tissue.

It becomes surprisingly fine. What's even more interesting is that the skin tissue of the fish becomes just a very thin membrane, which fills the physiological tissues of the fish with water and maintains the balance of pressure inside and outside the body. This is why deep-sea fish are not squashed under such enormous pressure conditions.

In addition, the eyes of deep-sea fish have become very peculiar. Our common goldfish are not only very brightly colored and have particularly large eyes, but also have fun. Compared to goldfish, fish that live in the deep sea have a more eye structure than golden.

Fisheye. Much richer. The eyes of ordinary fish mostly grow on the sides of the head, but the eyes of the back fish that live in the deep sea grow on the back of the head. Viewed from the front, the two large eye frames of the back fish look like two upright eyes.

Light bulb.. And from above, the two eyes resemble two large circles, occupying the "fortress" part of the head. What's even more interesting is that this fisheye can move up and down, left and right, and its eyeball structure is similar to that of a telescope, and it can adjust the focus freely.

The peculiar eye structure is almost a common physiological feature of deep-sea fish.

It's the result of their long-term adaptation, and they produce blood pressure in their bodies that is commensurate with the pressure at ocean depths, so they are not afraid, and artificial machines can't compare to them.

Because they are adaptable!

Be clear and not obscured. This may be a rice fish, translated as 鮸鱼 (pronounced miǎn), which resembles a sea bass, with a dark, grayish-brown and purplish-green body, and a grayish-white belly. The upper edge of the dorsal fin spines is black, and the fin strips ** have a longitudinal black stripe.

There is a sunny spot above the axillary part of the pectoral fin. The rest of the fins are grayish-black. The body shape of the rice fish is flattened and elongated backwards on both sides, and the back and abdomen are shallow arcs.

Chinese scientific name: rice fish, referred to as rice fish.

Other names: eel, minzi, minyu, catfish......