Is it true that the memory of a goldfish has only 7 seconds?

Is it true that goldfish have a memory of only seven seconds? In fact, if we take "fish have seven seconds of memory" as a scientific conclusion, it will raise a lot of questions. Can memory be accurate to the second? If the average fish has a memory of seven seconds, wouldn't some of the dumber fish have a memory of only two or three seconds? When these "stupid" fish take a bite of food, will they instantly forget what is in their mouths?

Is it true that goldfish have a memory of only seven seconds?

Of course not true, most people think that goldfish memory time is only 7 seconds, in fact, goldfish memory time is not only a few seconds long.

Goldfish have a memory of at least three months.

In 2003, Plymouth University School of Psychology conducted an experiment on goldfish memory time, which proved that goldfish have a memory time of at least three months and can distinguish between different shapes, colors and sounds of different objects. The experiment involves fixing a lever in water for only one hour a day. Train the goldfish to push the lever for that specific time. If the goldfish can remember that time and push the lever, it will get food as a reward.

The result is that trained goldfish quickly learn to push the lever at the right time to get food. A series of similar studies have shown that goldfish can be easily trained to eat food at specific times and to respond to a sound signal.

Why doesn't the goldfish swim to the bowl?

Goldfish don't swim to the side of the tank, not because they can see the tank, but because they have a pressure-sensing system called a lateral line that keeps them from touching the tank wall. Some blind cavefish use their unique lateral line system to swim freely in the absence of light.

Goldfish have a memory of only seven seconds.

Elsewhere in the world, fish have a seven-second (or three-second) memory, which is widely believed to come from an advertisement, according to ward of the university of sydney, but perhaps because it is so old, the exact source is hard to find. Ward also believes that early zoologists used overly sophisticated methods to test fish memory. These tasks, which are suitable for testing human intelligence, are obviously too difficult for fish, so the experimental fish leave a poor record, which may be one reason for this myth.

In short, all the studies on fish memory show that fish have memories that last much longer than seven seconds. "Fish memory is only 7 seconds, never feel bored" statement, although beautiful, but legend.