Animal experts say that the human ear has an eardrum, and the sound enters the ear can make the eardrum vibrate, and this vibration is transmitted to the auditory organ in the ear, and the sound can be heard. Sound travels more easily in water than in air. Fish has a lot of water in its body, and the sound travels directly through the fish's body to the ears. In fact, fish only have inner ears and no tympanic membranes. Unlike humans, most fish ears do not communicate with the outside world at all, but are protected by sacs on the sides of the head, just behind the eyes.

Dragon Eye

Can be used by many kinds of fish Another way to collect sound. Their ears are attached to the swim bladder, and the sound of the water vibrates the wall of the swim bladder, just as sound travels through the air to vibrate the eardrum. This vibration usually travels to the ear along a string of small bones attached to the swim bladder. Still others transmit vibrations not by small bones, but by tubular organs extending from their swim bladders.

Data show that sound is important to fish. Many fish can make powerful calls to each other that can be heard from miles away. Some fish make sounds by grinding their teeth, others by rubbing their fins, some fish make sounds with their swim bladders, and some fish make sounds by tapping their muscles to vibrate their swim bladders. In addition, the sound of the fish is meaningful, some express anger, some alarm, and some are ready to fight.