Fish are swimming in the water, and you cannot hear them making a sound. In fact, fish can court, seek bait, ask for help, call the police and communicate by vocalizing, which is equivalent to talking.
Although most fish do not have special vocal organs, they can use other parts of the body to vocalize. For example, toptocks use swim bladder to make sounds, scorpionfish rubs part of the gill cover to make sounds, and some fish make sounds through moving bones.
The sound of fish is difficult to be heard. If you use an underwater loudspeaker, you can hear the different sounds made by various fishes-the sound of flounder is like the bass of an accordion, and the sardines can make a “crash” sound. Herrings can “chik” like a bird, and catfish can “buzz” like a bee…
These calls are special languages, and fish use this language to talk and convey information. When the scientists played the pre-recorded voice of the white shark calling for help on the research ship, a group of white sharks quickly rushed towards the research ship from a distance; when the alarm sound of an enemy attack was played, the white sharks turned around and left.
Many people may not believe that fish can cough, but this is absolutely true. However, fish’s cough is not caused by colds and colds. It is like a person who accidentally inhales smoke and the lungs are badly stimulated. Under instinct, the lungs are repeatedly contracted and violently contracted to “choked” the smoke and dust. Cough mouth fish
fish live in clean water is generally not cough. When the water body is rancid or polluted, a lot of filth will accumulate on the surface of fish gills, and the fish must clean up by themselves every once in a while-their bodies twitch frequently, and their gills will also shake sharply. There will be a slight “poof” sound, open mouth and cough constantly, thus shaking off the dirt attached to the gills and oral cavity. Ichthyologists call this behavior “cleaning gills.”
The more metals, pesticides, and other pollutants in the water, the more severe the fish cough, and sometimes it may even become hoarse until it stops breathing. Therefore, only by trying to protect the water source and prevent the water body from being polluted, can the fish live safely.
What, fish will fart? Isn’t it weird? Let’s briefly talk about why people fart. We know that there are bacteria in the human intestines. These bacteria decompose undigested food into methane gas, which is then discharged from the anus. This is farting. Someone may ask, fishes live in water, and their bodies are under pressure from the water. I am afraid it is not easy to discharge gas! Therefore, scientific researchers have observed for a long time and found that the methane in fishes will be sealed in the feces by a kind of viscous gel, and will not release a single bubble. Therefore, some people think that fish is not hard to put fart, but has no fart.
However, there is a kind of shark that often floats to the surface of the sea, swallows air in, and then expels it from the anus to achieve elevation in the water. To say that this is fart is a bit far-fetched. Because they emit air, not methane.
A professor in the United States found that many herring swim bladders grow near the anus. When encountering an enemy, groups of herrings discharge gas from the anus at the same time, and a large number of bubbles rise, which confuses the predator and escapes. This peculiar defensive behavior can be regarded as farting.
Flat Fin American Toadfish
Unexpectedly, fish can sing, and it is a love song. The flat-finned American toadfish that inhabits the eastern Pacific Ocean, during the breeding season, the male fish will come under the rock crevices on the shore and make a low buzzing sound at night when the tide is high. This sound can last for an hour. The sound is like a motorbike speeding on the seabed, which makes the residents of the seaside much trouble. In this regard, scientists conducted research and found that the male flat-fin American toadfish was “singing” courtship songs. They contract the muscles on the side of the swim bladder, causing the bladder wall to vibrate, and then vibrate the surrounding water, making a buzzing sound. When the female fish hears the sound, they will swim eagerly for a tryst.
Cod living in the waters of the North Pacific Ocean, males use calls and movements to show off to females when courting. When the female fish approaches, the male fish expands its fins, makes a “gurg” sound while turning somersaults, and just sings and dances, performing songs and dancing. However, this behavior is a severe warning to the other males: “Leave quickly, otherwise you will be rude to you!”
go to bed
If you keep observing the goldfish in the fish tank, you will find that they swim around in the water during the day and still keep their eyes open at night. So, don’t the fish need to sleep? Actually not. Fish are vertebrates. Like birds and beasts, they all need to rest to relieve the fatigue of the brain and limbs, thereby restoring energy.
Because the fish has no eyelids, the eyes cannot be closed whether they are asleep or awake. Even if the fish is dead, it keeps its eyes open. If you find that the fish is still in the water, you are asleep. Don’t disturb them at this time.
Lungfish dormant in the mud
Some fish will not sleep long. The African lungfish living in fresh water, during the dry season, gets into the mud to escape the heat. Once the outer layer of the mud pile is dried by the hot sun and a mud hole is formed, the lungfish uses its mouth to open a “little skylight”. Then, the lungfish’s skin will leak a kind of mucus, making the walls of the mud hole hard. , Forming a “bedroom”. Lungfish sleep inside, pass through the hole, and breathe in the fresh air outside with a swim bladder equivalent to the lungs, so that they can sleep for months without eating or drinking. When the rainy season came, the “bedroom” was washed away, and lungfish returned to live in the water.