Diverse sounds of fish species

Seahorses make their own typing sounds (Photo: snapscot.com)

Increasingly, scientists have discovered many incredible mechanisms of fish when creating mysterious murmurs, growls or pounding to attract mates and drive away enemies.

One of the strange cases is that seahorses make a knock with their own head. They knocked the back of the skull into the star-shaped mane at the back.

This finding and other findings in recent years show that the sound of fish is not only loud and long-lasting cries but also short whispers that last only 5-10 milliseconds, the researcher Timothy Tricas at the University of Hawaii at Manoa said.

There are more than 25,000 species of fish, more than any vertebrate animal in history."We know at least 1,000 species of fish that make sounds, with a multitude of different tools, in which we can only learn very little , " Tricas said.

Tricas and colleagues investigated the butterflyfish family, which consists of 126 species with vivid colors and impressive lines in the world's coral reefs. A group of 80 species is the only fish known to combine bubbles - increasing hearing - with parallel lines on both sides of the body - helping to recognize the movement of water. This is like a human hearing sounds through ears connected to some hair.

Using Hawaii's underwater cameras and coral reef recorders, Tricas and colleagues discovered butterflyfish that created some kind of noise that lasted only 10 to 150 milliseconds by beating the tail, knocking fins, nervous, growling and dancing.

Butterfly fish (Photo: wildworldweb)

Butterflyfish may have connected bubbles with bilateral veins because they do not have a mechanism to produce loud sounds. They can only produce weak signals."We also know that butterflies swim very close to each other. Because they can only whisper to each other, they must swim close to be able to hear , " Tricas said.

Another fish that scientists have investigated is pearl fish. They live in starfish or sea cucumbers. While some fish species communicate by pulling and jerking bubbles up and down their muscles, the pearl fish moves the engine a lot slower to produce a strong sound with low frequency to announce their presence. from deep in the lair. It is an innovative system that no one has ever known.

Researching fish species may uncover the light of the evolution of communication and hearing ability, and related behaviors such as finding a mate or protecting territory.

MT