Some people say that fish only have a memory of 7 seconds? Is this really the case?

No. Different fish have different memory times, but the shortest is three days, and the reason why the memory of fish is only 7 seconds is a marketing method for merchants.

A fish's memory will never be only 7 seconds. It's like when you're fishing, you catch a fish and you accidentally get away, and it's hard for you to catch it again, because he remembers the pain.

The memory of a fish is not just seven seconds, different fish have different memories, some can last for several months, and the shortest can last for a month.

Is it true that fish only have a memory of 7 seconds? Foreigners speak with facts, and after reading the results, they increase their knowledge.

We've all heard that fish have the worst memory, with only seven seconds of memory, and goldfish have even worse memory, with only three seconds. Many people also like to ridicule forgetful people as "fish memories". In fact, are fish really that bad at memory?

Fish is a kind of ectothermic aquatic vertebrate that breathes with gills, and there are many types of fish, many organisms have evolved from fish, and the survival of fish has an ancient history.

According to scientific research, the memory of fish is not only 7 seconds, on the contrary, fish have a long memory time, so the idea that fish only have 7 seconds of memory is just a rumor on the Internet, without any scientific basis, but it has caused misunderstandings to many people.

Scientists have done a lot of experiments before: they used a loudspeaker when feeding the fish, and they used the loudspeaker every time they fed, and over time, the fish developed the habit of hearing the sound of the loudspeaker and knowing that it was a "meal". After a while, the scientists set the fish free, and when the loudspeaker sounded, they all followed the memory to feed.

Fish not only have a good memory, but they also have a very high intelligence. Experiments have shown that if a fish is placed in a maze, it can quickly find its exit once it is fully familiar with the maze. They can also identify hazards and information by smell and color.

And, as we all know, salmon return to their original place of birth from July to October every year to reproduce, so this phenomenon can completely break the idea that fish only have a 7-second memory, just think, if you don't have a good memory, how to find a way home?

Nowadays, many fishermen are taking advantage of the fish's strong memory to adopt new farming methods, training the fish for a period of time, then placing them in the free sea, and after a while, the fish will send a signal and the fish will come back to feed on their own, which not only saves farming space, but also reduces environmental pollution. The myth that the fish only has a memory of 7 seconds, although it is beautiful and dreamy, is also a fallacy.

According to the corresponding research, it can be seen that the memory of fish is not more than 7 seconds at all. In fact, the memory of fish also has a long memory, and time is just a kind of speculation for people.

In fact, no, through a large number of research and experimental results on fish memory by scientists, the memory time of fish is very long, whether it is short-term memory or long-term memory, it is very outstanding.

In fact, the memory of the fish may not be only 7 seconds, but we don't know the exact situation.

I think the memory of a fish is more than 7 seconds, because that's just a way people say.

The memory of the fish is not only 7 secondsIn the 60s of the last century, scientists at the University of Michigan in the United States did a classic experiment on the memory of fish

Scientists put a goldfish in a long fish tank, and then turned on a bright light at one end of the fish tank and shone it into the water. A goldfish swimming in the water can naturally feel the light, but it does not react much to it. At the moment, the light in the water has little effect on its survival.

After 20 seconds, the scientists released electricity in the place where the light was emitted, and the fish felt the electricity and quickly fled it.

Scientists follow this order – emitting bright light first, then electrodes, and repeating several times. After that, even if the fish sees the bright light and there is no subsequent discharge, it will instinctively escape. This is enough to show that the goldfish has memories, otherwise it would not actively avoid the light.

But how long does this memory last?

One month later, the scientist repeated the same trick, turning on the lights, and the previously trained fish immediately took refuge. This suggests that fish can form long-term memory, at least not 7 seconds.

On the Internet, there is a passage that is widely circulated: "A long time ago, someone told me: the memory of a fish is only 7 seconds. Is it true that fish only have a memory of 7 seconds?

It is said that goldfish only have 7 seconds of memory, is this true?

It has been said that goldfish are never boring, because their memory is only 7 seconds, and the world in their eyes is always new. Obviously, this statement is incorrect. Fish and humans can feel pain, recognize their environment, recognize danger, and their memory can last for months or more.

Not all fish memories are 7 seconds. Some fish have a longer memory, and many can learn to walk the maze, identify other fish, and remember what kind of fish are stronger competitors than themselves.

Fish are body covered with bone scales, breathe with gills, swim through the swing of the tail and trunk and the coordination of fins, and feed on the upper and lower jaws, belonging to the vertebrate subphylum of chordates, and generally people divide vertebrates into five categories: fish (53%), birds (18%), reptiles (12%), mammals (9%), and amphibians (8%).

When feeding, the fish will gather together, which is a conditioned reflex, indicating that the fish has more than 7 seconds of memory.

This is not the case. Because the memory of some fish is not so short, and there is no scientific ** about this matter, it is just a statement.

This is not really the case, after a lot of experiments and research by scientists, it was found that the memory of fish has a long time, not only 7 seconds.

No, the memory of the fish is very high, and scientists have done experiments, and the fish quickly came out of the maze.

On the Internet, there is a passage that is widely circulated: "A long time ago, someone told me: the memory of a fish is only 7 seconds. Is it true that fish only have a memory of 7 seconds?

Some people have always said that "the memory of fish is only 7 seconds", but this statement is not correct, as early as 1965, there are scientists experimented, use light to attract fish in the fish tank, and then shock them, after repeating several times, the fish will hide when they see the light, and remember to dodge when they see the light within a month, and some fish are the same as people, can rely on remembering each other's faces.

Sometimes someone will hear someone say, "I'm like a fish, I only have 7 seconds of memory, so don't expect me to remember." But in fact, scientists have found that fish can remember more than 7 seconds. Let's take a look at the details of what the situation is.

As early as 1965, researchers at the University of Michigan in the United States conducted an experiment with goldfish. They put the goldfish in a large fish tank, shoot a bright light at one end of the fish tank, and after 20 seconds, release an electric shock at the end that just emitted the bright light. Soon, the goldfish had a memory for electric shocks.

When they saw the light again, they didn't wait to release the shock before quickly swimming to the other end of the tank. The researchers also found that with proper training, the goldfish could memorize the trick of dodging electric shocks for a month.

With such an experiment, would you still say that the memory of a fish is only 7 seconds?

In addition to goldfish, there is also a famous ornamental fish, the paradise fish, which also has a strong memory. If the Paradise Fish encounters a strange goldfish in the pool, they will swim around curiously while looking at their new strange neighbor until they lose interest. If the Paradise Fish and the Goldfish meet for the second time in the tank, they will soon find out that they have met an old acquaintance and lose interest in exploring.

Experiments have found that such memory can be maintained for at least 3 months.

Later, scientists discovered that zebrafish are also very intelligent animals, and they can complete a variety of tasks. In 2002, researchers at the University of Toledo in Ohio, USA, found that zebrafish remembered the red signal before feeding, and that they still remembered the red signal 10 days after the training was terminated. Zebrafish can quickly learn how to walk the maze, learn to find food based on sound signals, remember the shape of predators, and can dodge electric shocks according to cues.

Interestingly, there are similarities between zebrafish and human memory characteristics. When there is too much stress, zebrafish are just as difficult to remember as humans, and distraction will also reduce their learning efficiency. And the zebrafish's memory gradually declines with age.

Therefore, don't underestimate the memory and learning ability of fish, there are still many mysteries waiting for us to develop in nature.

1. Why is it said that the memory of fish is only 7 seconds?

2. If the memory of a fish is only seven seconds.

3. Why do fish only have a seven-second memory?

4. Why did Qi Yu say that fish only have a seven-second memory.

1.The memory of the fish is only 7 seconds, which is not based on scientific evidence, but a popular phrase in the Internet, which means that the memory of the fish is only 7 seconds, and it will be forgotten after 7 seconds, and it will not remember what happened before, so it will not be boring in a small fish tank, reflecting loneliness and sadness and injury, but after the research of scientists, it has been found that the memory of the fish is more than 7 seconds.

The memory of the fish is only 7 seconds is fake, and the memory of the fish can be passed on to the next generation, or even the next generation.

Specifically, offspring are able to memorize and respond "across generations" to events that happened to their parents that they did not experience themselves. DNA methylation events in zebrafish can be passed on to the next generation, or even later generations. In other words, in fish (at least zebrafish), it appears that memories can be passed on to offspring by passing DNA methylation, which may help zebrafish better adapt to changes in their environment.

So, don't say that the memory of the fish is only 7 seconds in the future.

In terms of memory, fish are on par with, if not better, the "higher" vertebrates, and use tools to get food. Many fish search for prey by emitting electrical pulses, and some herbivorous fish carefully take care of the "vegetable garden". They draw maps to find shortcuts from one place to another.

The IQ of the fish

The IQ of a fish is equivalent to that of a human being 2 years old, and scientific experiments have shown that fish can even open the cap of a bottle and eat the delicious small crab inside. The average lifespan of a fish is about 3 years old, and if the living conditions are very good, they can live up to about 4 years old. Fish have well-developed eyes, which is the only similarity between it and humans.

Quite different from humans in other respects, fish have three hearts, two memory systems, one is the brain memory system, and the other memory system is directly connected to the suction cup.

In order to avoid the predators, in addition to the well-known mimicry camouflage and "wrist" self-preservation techniques, the octopus will bend and fold six of its eight "claws" upwards to make a coconut shell when facing danger or starving divers. The remaining two "claws" will stand on the ground of the seabed, secretly move backwards, like moving coconuts, and flee in backwards and strides, in a very funny posture.

The fish's memory is not only 7 seconds. The memory of fish is far more than 7 seconds, and the memory of different fish is also different, some fish may have a memory of months, some fish can have a memory of years, and even some matching fish can continue to inherit.

Memory is the human brain's recognition, retention, reproduction or re-recognition of experienced and past things, and is the basis for high-level mental activities such as thinking and imagination.

The basic process of memory is composed of three links: recognition, retention, recall and recognition, and these three links are interrelated and mutually restrictive in the process of memory.

The use of methods and skills that can effectively improve memory after practice can make it better serve human work, life and study, and promote human development.