Imagine a fish that can grow up to 12 millimeters in size As a jet engine takes off, 100 meters away It produces a similar high decibel sound.

To understand exactly how this situation, which is difficult to understand even for our minds, took place, In the world of these little fish Let’s take a dip together.

First, understanding the severity of the decibel levels can help us better visualize the sound this fish makes.

• 0 dB – The premise of sounds that the human ear can hear
• 10dB – Rustling leaves
• 30 dB – Whispering, quiet speech
• 50 dB – Rain sound, dishwasher sound
• 60dB – Normal speaking voice
• 70dB – Noise of heavy traffic – noise of vacuum cleaner or hair dryer
• 80 dB – Alarm clock sound – subway sound – factory sound
• 90 dB – Lawn mower noise – heavy traffic noise
• 100dB – The sound of a garbage truck or snowmobile
• 110dB – Chainsaw sound
• 120dB – The sound an airplane makes when taking off: thunder
• 130dB – Boring hammer noise
• 140dB – The sound of the shotgun
• 180dB – Rocket launcher sound

Researchers examined the fish Danionella cerebrum in an aquarium.

Although we never think of fish making sounds when we think of fish, the small and transparent Danionella cerebrum challenges these assumptions. more than 140 decibels can produce sound.

Using a combination of high-speed video, micro-computed tomography, gene expression analysis and finite difference methods, the researchers found that males of the Danionella species with tympanic cartilage/ciliated cartilage, a special rib and a durable muscle It shows that it has a unique structure.

So how exactly do they make this sound?

A special muscle pulls one of the fish’s ribs against a sunken piece of cartilage, and when the fish releases the rib to make a loud noise It collides with the swim bladder (the gas-containing organ that keeps the fish balanced in the water).

Researchers also examined the fish’s genes and found that the special rib traction muscle has greater endurance than other muscles, allowing it to vibrate rapidly for longer periods of time. With this durable muscle you can fish one fish after another. make many, fast sounds it allows it.

Moreover, only men make the noise.

While it is clear how small fish make this sound, it is still unknown why they do it. According to theories to find each other in dark water, to help attract mates, to ward off other males Maybe that’s why they do it.

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