Do fish have ears? Fish have no ears

From the outside, it seems that the fish has no ears. Indeed, for a long time it was thought that fish could not hear anything. But fish do have ears, and most fish have very good hearing.

Fish don't have external ears like humans, so it looks like they don't have ears. However, the two pieces of skin that grow on either side of a person's head called ears are just the outer ears that help in collecting sounds.

The human ear has a tympanic membrane, and when sound enters the ear, the eardrum vibrates, and this vibration is transmitted to the auditory part of the ear, so that sound can be heard.

Fish do not have eardrums, and in fact most fish have ears that are not connected to the outside world, but are protected by sacs on both sides of the head, which are behind the eyes.

Sound travels much more easily in water than in air. Like other animals, fish have a lot of water in their bodies, and sound can pass directly through the fish's body and reach the ears.

Many species of fish can collect sounds in another way. Their ears are connected to the swim bladder, and the sound in the water makes the swim bladder walls vibrate, just as sound passing through air makes the eardrum vibrate. This vibration then travels to the ear, usually along a string of small bones connected to the swim bladder.

Some fish do not rely on small bones to transmit vibrations, but on tubular organs that extend from the swim bladder.

Sound is important for fish. Many fish can make powerful calls to each other, which can be heard from several kilometers away. Some fish make vocalizations by grinding their teeth, while others make vocalizations by rubbing their fins on their bodies. Many fish use their swim bladders to make vocalizations. A special percussive muscle vibrates the swim bladder to make a sound.

Fish have ears.

It's just that the ears of the fish are hidden in the bones on both sides of the head, and they can only be seen by opening the skull, which is called the inner ear, and there is no middle ear and outer ear, so many people often mistakenly think that the fish has no ears, but the fish has ears, but they are not easy to find, and the ears of the fish have the function of listening to sounds and maintaining body balance.

The fish ear can be divided into two parts, the upper part of the fish ear is called the utricle, the utricle has 1 small hole and 3 semicircular tubes to communicate, these 3 semicircular tubes are called semicircular canals, which are sensory balance organs. At one end of each semicircular canal there is a large part called the ampullae, the part below the fish ear, called the balloon, and behind it there is a protruding part called the bottle sac.

Other sensations of fish

1. Vision: The eye of the fish is a transparent ball, which is inelastic, so it cannot adjust the curvature, and can only change the distance between the lens and the retina through the mirror-like protrusion behind the crystal, so it can only see things in the near distance, and it is not clear to see the far ones. However, because its eyes are on the left and right sides of Zhengwu, it has a wide range of perspectives, so every move around it can't escape its eyes.

2. Sense of smell: The sense of smell of fish is different from that of land animals, usually the sense of smell of land animals is to feel the volatile gases around them, while fish live in water, its sense of smell is mainly to feel the amino acids in the water body, so as to judge the situation of the surrounding fish, and at the same time can detect the quality of water sleepiness.

3. Taste: The taste of fish mainly depends on its taste buds, which are widely distributed, not only on the mouth, but also on the lips and heads. For fish, the role of taste is to determine whether the food can be swallowed, so they tend to swallow things that they have not eaten repeatedly.