Cant fish - what is it?

What is a school of fish? This is exactly what the article will tell you. There are among the fish those who spend their whole lives alone, they are individualists, but there are also representatives who gather in flocks at specific periods of life. Thus, the school of fish is a large cluster of individuals of one species. It seems that this is one living organism. It is a beautiful and impressive sight - a school of fish, the photo perfectly conveys its greatness.

What fish gather in jambs

Most river and lake fish (roach, perch, bleak and others) live in small flocks, and in large jambs, as a rule, gather during spawning. In this case, there is one feature: the smaller the fish, the greater their number.

If we take into account the predominant part of marine pelagic fish (herring, sardine, horse mackerel and others), they keep big flocks for almost the whole year.

The location of fish in jambs

Water inhabitants, located in a moving flock, are comparable with birds, because each occupies a certain place.

Once there were speculations that the fish in front of everyone dissected air or water, creating lighter conditions for others. But later it was proved that this is not so. In fact, the fish can not be built, depending on the electric forces that appear between the fish . During the movement in the pack, they can either mutually repel, or mutually attract, or have no effect on each other. If they float by a ledge, there is no electricity between them and they interfere less with each other. In this regard, large fish (tunas, pelamids) are located in a wedge.

Fish in the flock infrequently are in the same place. As a rule, they seek prey or are sent to spawning grounds.

Who is in charge in the school of fish

Most fish do not have a main fish, and all are equal to one or the other group of more experienced fish. However, when observing the cod, it was evident that the male was at the head of the organized community.

Each shoal of fish often has a certain color. Representatives in the pack can not be beaten, otherwise they will be lost.

Advantages of schooling life

A shoal of fish is a huge flock, in which it is much easier for fish. It's easier for them to escape from danger. After a predator one fish is easy to catch, but when a lot of individuals observe it immediately, this task is much more difficult. When an enemy is detected, the fish rushes to the side, which is why the whole pack is alarmed. When a predator is found, some fish hide, while others are scattered in all directions. Most often the predator remains with nothing. Different shoals of fish use different methods of protection from enemies. For example, the mackerel is knocked into a heap and begins a swift movement in a circle. A small sea catfish, when approaching a predator, are knotted in a tangle with pointed tails outward. As a result, they become like a prickly sea urchin. Small fishes of the placentos angullaris painfully bite the abuser in response to his attack. Again, no one will want to attack them a second time.

Fish schools more quickly find food, it is easier for them to discover a cluster of plankton. If one fish sees food, then everyone will be full. There are also those representatives who hunt collectively.

Flocks are easier to travel, so spawning grounds and wintering grounds are more quickly found. Therefore, often by the time of long hikes, fish gather in jambs. Jointly wintering, they spend less oxygen.

The world's largest shoal of fish is sardines (commercial fish). They overcome huge distances. After their formation in flocks, predators begin to follow them.

In general, jambs are called any group of fish, holding together for some reason.

The synchronized movement of a flock of fish is one of the most fascinating and unusual spectacles. They move in unison, so much so that the one watching them can not look away. Movement in the doorpost is a complex process. Experts eventually came to the conclusion that the fish, while in the pack, adhere to the observance of the distance between each other, and also react to the movements of a nearby neighbor, turning in the same direction. This is what allows the fish to move in a coordinated and coordinated way.

Of course, there are fish that love solitude, for example pike, but still most of them are looking for societies, forming huge and unique jambs.