What fish don t have eyes, fish have eyes, but can they see?

Blind fishIn the Yin River deep in the cave of Guilin, Guangxi, there is a kind of eyeless fish. The eyeless fish is small, only six or seven centimeters long, and has a pink body, like a red crucian carp, but it has no scales. In addition to the lack of eyes, there are a few other strange things about it:

Four short whiskers grew from the side of the mouth, like loaches; The fins of the tail are forked, like a swallow's tail; The whole body is translucent, and the internal organs of its spine can be seen; The strangest thing is that although it has no eyes, it is afraid of light.

Scientists call this fish the blind fish. The blind fish actually has eyes, but its eyes are degenerated under the skin, and it can't see anything, and it relies on its sense of smell and smell to move and forage.

The ancestors of blind fish, like ordinary fish, lived in rivers and lakes. One day, they suddenly found an underground cave and swam into it curiously. Swim and swim, swim farther and farther, the hole is getting darker and darker, and you can't go any further.

Swimming back, the peaks in the cave turned around, turned around, and finally got lost, and could never return to the bright rivers and lakes. They had no choice but to live in this dark underground cavern. Slowly, they adapt to the dark environment.

After generations of acting love, the eyes deteriorated, and finally they were covered by skin folds; In order to survive, their sense of smell and touch are more developed. And because the body is not irradiated by light, the pigment disappears, and it becomes a transparent fish, which is the origin of the blind fish.

Fish that live in dark and dark conditions for a long time have no eyes due to deterioration of eyesight, and there are two eyes of flounder with one side on one side.

Fish can only see the environment at about 130 degrees on the sides of their bodies, and cannot see anything directly in front of their heads, because the eyes are on both sides, and the visual field cannot be crossed.

I can see the eyes of a fish...

But I couldn't see the tears.

If you're water, you can feel it.

The eyes of the fish have no eyelids, its nervous system is also relatively low-level, his eyes do not have a complex refractive system in the eyes of the human eye, allowing his eyes to see things, but he is highly myopic, the fish mainly rely on the lateral lines on both sides of their bodies to perceive the water flow, water temperature and direction of the water flow, so as to judge their own direction of movement.

1.There are generally two reasons why the fish suddenly have no eyes, one is that the eyes are pecked in the process of polyculture, and the other is that the eyes are ruptured and fallen off due to parasitic infection.

2.It is important to note that in either case, you can only try to avoid it, and there is no way to recover.

3.In polyculture, those with too much difference in body shape must be isolated, and if there are signs of parasites, they should be killed with drugs.

Summary. What happens if a fish doesn't have eyes.

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There are still many animals without eyes, for example, the cave newt is an animal without eyes, it lives in the limestone caves in the southeast of Lashan in the European Alps, which is the same as the Liptodirus beetle. The following is an introduction to the content of "what animals don't have eyes", interested partners can continue to read and understand.

1. Kauai cave tarantula: This animal is said to have adapted to the very dark environment of lead in its long evolutionary history, so it has slowly degenerated the eye as an organ, but their sense of touch is still very agile.

2. Madascar Blind Snake: The entire life cycle of this animal is in a state of blindness, the length of the body is only 25 miles long, and the reptiles in the crypt where they eat food.

3. Kentucky Cave Shrimp: This animal also has no eyes, and the god is clear and likes to live in the cave very much, the whole body is transparent, and the length of the body reaches the length of centimeters.

4. Texas blind salamander: This animal is a very special animal that does not develop eyes and lives in an underground environment without light, with a body length of 13 centimeters, and eats snails and amphipods.

Fish without eyes is called eyeless fish, also known as eyeless fish, blind fish, its whole body is no scales, the flesh is red, the tentacles are long, with a slender and graceful body before swimming, not enough is no eyes, when perceiving the outside world, relying on a keen sense of smell and long tentacles.