We often overlook a factor "noise" that has a great impact on fish.
Regarding noise, you don’t need to say much. Everyone understands how loud the sound is noise? Under normal conditions during the day, it is 60 decibels or more, and it is more than 40 decibels at night. I will not detail the harm of noise to the human body. Many people feel that the noise is a small matter to fish. In fact, it is not. Fish’s hearing is much more sensitive than humans. For a long time, people think that fish can’t hear anything. Because fish don’t have outer ears, they look like fish from the outside. No ears. In fact, fish only have ears, and most fish have very good hearing
Most of the fish are afraid of disturbing, and will flee when there is movement. The auditory organs of fish are very sensitive. People walking, making noises, throwing things into the water, the sound of mechanical vibrations, and the harassment of ferocious fish will cause disorderly migration of fish schools. After the "danger" disappears, After a period of time, you can return to the original place. There are also many people and shadows on the shore shaking, and the reflection of people in the water through the refraction of light will also scare away the fish. In addition, the accomplice was caught or escaped, and the fish used its own side line to send a signal to "notify" the partner to escape from the danger. This is probably the reason why “one fish is caught and all the fish flee” on fishing grounds.