General, Research, Technology

How do the smallest fish in the world become giants over time?

In 2017, during research work oncoast of Australia, scientists have found tiny fish a few millimeters long. Each individual could fit on the pillow of one finger, so they considered the discovery of such creatures a great success. It was clear that these were someone's fry - small fish recently hatched from eggs. But scientists did not wait until they grow up. Instead, they carefully removed the eyeball of one of the individuals and took DNA samples, which contain instructions for the development of each living organism. Comparing the data obtained with samples of other fish, it was found that they found fry of the moonfish (Mola mola). In the course of the study, it turned out that these millimeter creatures increase 600 times over time and reach 2 meters in size. These huge fish have long been considered very mysterious and now they are even more amazing.

A year later, these tiny creatures grow giants larger than humans.

The most amazing fish

At the moment, scientists are aware of the existencesix varieties of moonfish. The fry of some of them have already been found and described, but the "kids" of the rest have not yet been found. Among the tiny fish found off the Australian coast were unprecedented fry belonging to the species Mola alexandrini and Mola ramsayi. This, at least, was reported by representatives of the Australian Museum on the site dedicated to the Australian and New Zealand scientific discoveries Scimex.

Malek moonfish

Researchers have once again made sure thathuge moonfish up to 3 meters long and weighing more than 1.5 tons are tiny creatures in childhood. It is not surprising that the fry of many species were so difficult to find and even more so to attribute to any particular species. And this despite the fact that there are not so few tiny moonfish fry. It is believed that these fish are the most prolific vertebrates. According to some estimates, female moonfish produce up to 300,000,000 eggs at a time.

This is a puffer fish. Moonfish fry very much resemble her

Apparently, the fry need thorns to survive. It is logical to assume that predatory fish will not swallow creatures whose bodies are completely covered with thorns. But adult moonfish, despite their enormous size, are very vulnerable. They are actively hunted by sea lions, killer whales and sharks. Do not forget about the main enemy of nature, man. In some countries like Japan and Korea, moonfish is considered a delicacy. Because of this, they are among the vulnerable species and in European countries there is a ban on the sale of dishes and products from moonfish.

You can also read about the moon fish in the article about the scariest fish in the world.

Fish development

The process of turning fry into huge creaturesnot fast. According to the calculations of scientists, every day they gain 0.49 kilograms of mass, and their bodies increase by about 0.1 centimeter. Once an individual living in the aquarium of the American state of California, it took 15 months to increase its body weight from 26 to 399 kilograms.

In some regions of our planet, the moonfish is known as the sunfish and headfish.

How many years do fish with such a huge mass live infree conditions, scientists do not know. It is estimated that the average duration of a moonfish is about 23 years. But in captivity, they live much less, about 10 years. For humans, these fish are not dangerous because their beak-shaped mouth is not able to fully open. Therefore, they mainly try with tiny organisms that float in large numbers in the waters of the world's oceans. Judging by their growth rate and size, this is enough for them.

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If you caught a wave and want to learn more about fishsome interesting facts, I advise you to read the material on how they manage to survive in cold waters. It would seem that in cold conditions they should turn into floating pieces of ice, but this does not happen. So what is their amazing ability?