It is said that the memory of fish is only 7 seconds, is it true?

In fact, there have been many studies on how long fish have memories since the 60s of the last century. The most classic is the study of goldfish: keeping several goldfish in a tank and subjecting them to electric shocks in the tank.

Release the click again after 20 seconds, and when the stun stick is put into the water a second time, the goldfish will swim around in great horror. This is already a good indication that the memory of the fish is more than just 7 seconds. In order to conduct more in-depth experiments, the researchers increased the duration of the experiment.

A month later, they used the tap again on the tank, and it turned out that the goldfish were still impressed with the shock. This directly extended the goldfish's memory from seven seconds to a month.

The memory of the fish is more than 7 seconds, at least one month, and the longest can reach several months or years, of which the memory of the goldfish lasts for more than 3 months, and experimental studies have found that every time the fish is fed, the same paragraph**, after a period of time, the fish hears**, it will produce foraging behavior, even after 5 months of stocking, the fish can still start feeding after hearing **, so the memory of the fish is more than 7 seconds.

My goldfish, even if I change into different colors of clothes, can recognize me when I walk by, and they don't react to others or don't react strongly;

Two different** or even different species of tropical fish will know and get acquainted with each other, and then often forage and play side by side together.

Newborn fish will be very timid, and after some time they will grow up and know people. At first, put your hand into the bathtub, the small fish will escape, and the next day you will reach into the fish tank, the small fish will not escape, and then put your hand into the fish tank, the small fish will come around and play with their hands, or around and follow closely to play.

There are all kinds of indications that fish can't have a memory of only 7 seconds, but sometimes humans feel as if they do only have 7 seconds, because most of the time humans don't have the patience to observe for a long time, or because fish don't want to take care of people.

The claim that fish can remember one to three months, and that fish can only remember 7 seconds has been debunked.

The fish's memory is not really only seven seconds.

As early as 1965, researchers at the University of Michigan in the United States chose a long fish tank in order to test the memory of fish. At the beginning of the experiment, the researchers shot a bright light at one end of the tank, and 20 seconds later, released an electric shock at that end.

Then, they repeat the same at the other end of the tank. However, the goldfish soon developed a memory, and experiments have confirmed that with reasonable and effective training, the goldfish will firmly remember how to dodge electric shocks within a month.

How smart are the fish:

Goldfish have always been thought to be simple-minded, but Australian researchers have found that fish are more intelligent than people think. After more than 10 years of studying fish, Kevin Warbton, an assistant researcher at the Institute of Land, Water and Society at Charles Sturt University, found that fish can remember the type of prey for months, according to the South China Sea Institute of Oceanology of the Chinese Academy of Sciences.

That is, they will know to avoid predators when they are attacked by them, and this memory can last for months. In addition, scientists have also done some experiments on fish memory, and the results have proved that fish memory is more than just seven seconds.

The above content refers to People's Daily Online - Don't say that the memory of the fish is only 7 seconds, and the fish is more intelligent than you can imagine.

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.

In terms of memory, fish are on par with, if not better, the "higher" vertebrates, including non-human primates.

Fish use tools to get food. Many fish emit electrical pulses to find prey, and some herbivorous fish carefully care for the ...... of the "vegetable garden".Of course, there are also fish that have to maintain those "less reliable" relationships in order to fill their stomachs: the wrasse lives by eating dead skin and parasites from other fish, and if it accidentally bites the "customer" **, the "customer" will abandon it and go to another more attentive "cleaner".

Many fish can clearly remember where their most satisfied "cleaner" is, which shows that they have an amazing spatial memory. For example, they draw maps to find shortcuts from one place to another.

The memory of the fish is only 7 seconds.

After 7 seconds, it doesn't remember anything from the past.

Everything becomes new again.

This point of view is just a love story.

Goldfish actually have very long memories.

Goldfish also have memories and feelings.

If I told you that the beautiful goldfish swimming leisurely in the goldfish bowl also have memories and feelings, would you believe it?

According to the Sunday Times, veterinarians hope that goldfish owners will treat their beloved pets well, because the latest research has found that goldfish have good memories, they can feel pain and joy, and when their owners leave, they also want their owners to come back soon.

Previous studies concluded that goldfish only have a 3-second memory, but now researchers have found that goldfish have a very long memory. Raymond Lowe, a veterinarian from Australia, said: "People must think this statement is very strange, but goldfish owners and all veterinarians need to re-understand and take goldfish seriously.

At the Australian Veterinary Association conference in Hobart, Tasmania last week, Lowe presented his findings.

A study cited by Lowe was conducted by scientists in the United Kingdom, who found that at special times of the day, goldfish were able to learn to push the lever to find food. In another study, two goldfish that had fought were placed in the same tank as the other goldfish, and for a long time, the goldfish that had lost the battle did not dare to approach the winning goldfish, apparently fearing being attacked by the winning goldfish.

Resources.

01 7 seconds may only refer to some specific memories, for some other specific information, the memory of fish is amazing, just like sea turtles will return to their birthplace every year, salmon or something can remember the smell around the sound, location, etc. for a lifetime, five or six years, or even more than ten years later, when they are fully mature, they will return there to lay eggs, from this point of view their memory is still very strong, in essence, their nervous system and ours are not qualitatively different, So memory should just be a difference in quantity.

Back in the 60s, when chemistry began to intervene in neurobiology, there were already people studying the memory ability of goldfish. In 1965, researchers at the University of Michigan in the United States conducted an experiment with goldfish. They put the goldfish in a very long tank, then shoot a bright light at one end of the tank, and after 20 seconds, release an electric shock at the end of the tank that shoots the bright light.

Soon, goldfish develop memories of electric shocks, and when they see light, they quickly swim to the other side of the tank to avoid the electric shocks before they are released into the water. The scientists who designed the experiment found that with proper training, the goldfish could memorize the tricks of dodging electric shocks for up to a month.

Fish are likely to have memories that can last from a year to several years. Considering that most fish have a lifespan of only a few years, their memories are quite long-lasting. In addition, there are studies that show that the famous migratory fish, salmon, are able to return to their birthplace as adults because they have a memory of the smell of their young living environment.

At present, there are no definite studies to prove that fish have a memory of only 7 seconds, but many studies have found that fish have the best memory among animals.

In fact, fish can also get bored, because they really have more than 7 seconds of memory. Fish are the oldest members of the vertebrate family. As early as 500 million years ago, ichthyosambas have appeared, after such a long time of evolution, fish have long become a big family, almost all aquatic environments on the earth can see the figure of fish, rough estimates, the earth has more than 20,000 species of fish, and the rate of more than 100 species per year is increasing.

The "background" of fish is so large, of course, there are not a few people who study them. There are many studies on fish memory, but none of them have shown that fish have memories of only 7 seconds.

For example, the paradise fish in the ornamental fish not only has a super high appearance, memory is also better than the fish, they are born curious baby, if the paradise fish in their own territory to see the new stranger, it must be around the "newcomer" taste, and so on the paradise fish to see the newcomer carefully and clearly, it will not hesitate to abandon the "newcomer".

If the Paradise Fish and the "newcomer" meet again after a while, the Paradise Fish will not be interested in the "newcomer", because it will soon find that it has already picked up each other's family background, and there is nothing new about it.

Experiments have shown that the memory of the paradise fish is also at least 3 months. Experiments have also shown that fish memories are likely to be long-term. So, "the memory of the fish is only 7 seconds" is a beautiful mistake, and the fish will be bored, but it is much better than having an empty head and no memory!