Japanese and Australian scientists, Deepest swimming fish ever recorded. In particular, it is a fish that was filmed swimming 8 kilometers below the surface, thus setting a new world record. animal of unknown species snail fish pseudoliparisRecorded at a depth of 8,336 meters In the Izu-Ogasawara Trench in southeast Japan. The images were taken from a diver who was part of an expedition that started last year.
Just days after scientists recorded this fish, they found two such snail fish. Pseudoliparis belyaevi, in the same submarine trench at a depth of 8,022 meters. The team claimed that these were the first fish to be recorded at depths greater than 8,000 meters.
Scientists from the Deep Sea Research Center at Minderoo University in Western Australia set out to explore the Izu-Ogasawara and Ryukyu trenches of Japan, at depths of 8,000, 9,300 and 7,300 meters, respectively. , as part of a ten-year study of the world’s deepest fish stocks. The expedition started last year and, use autonomous deep-sea submarinesresearchers placed bait cameras deep in these pits.
Professor Alan Jamieson, the expedition’s lead scientist and founder of the Minderoo-UWA Deep Sea Research Center, pointed out that evolutionary adaptations allow: some species of snail fish can live about 1,000 meters deeper than where the fish live further from the surface.
More than 400 species of snails are known to live in a wide variety of habitats, from shallow waters to the darkness of the deep ocean. Under 8,000 meters of water, the pressure is 800 times greater than at the ocean surface.
The appearance of these fish surprised scientists. “When you imagine what the deepest fish in the world should look like, they’ll most likely be gnarled, black, with big teeth and small eyes,” Jamieson said. However, “probably [ese aspecto] It has nothing to do with the depth of the sea, but with the darkness of those regions.” Deep-sea adaptations tend to be less visible, he added.
Teens are deeper
In the video in question, the deepest recorded individual was a juvenile fish. Unlike other deep-sea fish species, young snails generally live deeper than adults.
“Because there’s nothing else beneath them, the shallow area of the range overlaps with many other deep-sea fish, so placing the fry in this area likely means they’ll be eaten,” Jamieson said.
Jamieson said the Japan expedition confirmed the theory that the Mariana snail, which was found at an altitude of 8,178 meters in the Mariana Trench in 2017, would not be the deepest fish in the world.
About a decade ago, Jamieson’s team had argued that it might be biologically impossible for fish to survive at depths greater than 8,200 to 8,400 meters.
It is intriguing that snail fish have adapted to a greater depth than any other vertebrate can survive, because they are not usually a deep sea breed. Most snail fish live in shallow waters such as estuaries.
Fish between 20 and 25 centimeters at these depths They feed on small crustaceans, which in turn feed on substances that fall into the pit when surface water creatures die.. “It can take weeks or months for these to sink in,” Jamieson said. However, the hungry crustaceans of the deep do not understand expiration dates and thus obtain an important food source.
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