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Pacific. The deepest living benthic fish. Video shown

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The deepest-living fish ever observed by man has been captured on video by a group of Japanese and Australian scientists. Fish belonging to an unknown species of the benthic family were found at a depth of over 8,300 meters. According to the researchers, it is not possible for any fish to survive even deeper.

The discovery, reported by the media on Sunday, was made in the Izu-Ogasawara Trench in the western part of the Pacific Ocean, near Japan. A group of scientists from the University of Western Australia and Tokyo University of Marine Science conducted observations there in 2022 using special, remotely controlled cameras.

The deepest swimming fish

According to the chairman of the expedition of researchers, prof. Alan Jamieson, during the two-month expedition managed to record fish swimming at a depth of 8,336 meters below the surface – the largest fish ever observed. They belonged to the benthic fish family (Liparidae), but according to scientists, it was a hitherto unknown species.

In addition, two fish were observed and captured at a slightly shallower depth of 8,022 meters. They belonged to another genus of benthic fish Pseudoliparis belyaevi. The fish of the benthic family are called snail fish in English because of their jelly-like body structure. This structure allows them to survive the enormous pressures that prevail at great depths. At a depth of 8 kilometers, the pressure is up to 800 times higher than on the surface of the Earth.

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Fish of the genus Pseudoliparis belyaeviReuters

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Fish at the bottom of the ocean

According to scientists, the depth at which these fish have been observed is very close to the maximum at which any fish is able to survive. The previous record depth at which fish were sighted was 8,178 meters below sea level. That discovery was made in the Mariana Trench. According to prof. Jamieson’s discovery from even greater depths in the Izu-Ogasawara Trench is due to the slightly warmer temperatures there.

As noted by the BBC, there are over 300 species of benthic fish, most of which are found in marine waters in estuaries, including in the Baltic. Some of them have adapted to life in the cold waters of the Arctic and Antarctic, also under the conditions of extreme pressure that prevail in the deepest ocean trenches.

SEE ALSO: This prehistoric fish ate our ancestors

Main photo source: Reuters

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