Why do fish have diagonal lines on the body?

Most fish on the sides of the body have diagonal lines that have a great effect on the life of the fish. The sensation of diagonal lines with domestic tremors is extremely sensitive, it can help fish feel the surrounding environment . Under the fish scales are very sensitive diagonal lines that have a great effect on fish life (Photo: fssbirding) When there are fish around or encountering certain obstacles, the water around the fish body arising tremors. The diagonal lines can not only feel the small vibrations of the water flow, but also can feel the surrounding sounds, because the sound is also transmitted in the water environment.

In addition, in the deepest of the sea, the eyes can not work, and some of their eye fish species have been degraded, fish can only rely on the diagonal to understand the surrounding situation. . Thanks to the diagonal, fish can wear swimming in gravel.

The reason the diagonal lines get this function is because it has a complete neural organization . On the diagonal lines outside the fish have some small holes, these small holes are connected with diagonal strands of tubes under the skin, on the wall there are many sensory cells, the end of the nerves on the sensory cells. , it goes to the guy through the diagonal nerves, forming a uniform neural network, making the fish's brain able to sense the wave movements of the water in time and quickly having react.