Successful video shooting of live fish in the deepest place in history, discovered by Tokyo University of Marine Science and Technology in the Izu Ogasawara trench with a water depth of 8300 m or more

Tokyo University of Marine Science and Technology announced that a fish captured in a video at a depth of 8336m in the deep sea around Japan, including the epicentral area of the Great East Japan Earthquake, was certified by Guinness World Records as ' the deepest fish in the world '. bottom.

New Guinness World Records for ultra-deep-sea survey around Japan! Official Certificate Award Ceremony will be held at our university on April 4th.
(PDF file) https://www.kaiyodai.ac.jp/upload-file/8ab43ca0cbc3a5800930d499662e295a736e165c.pdf

Scientists break new record after finding the world's deepest fish
https://www.uwa.edu.au/news/Article/2023/April/Scientists-break-new-record-after-finding-worlds-deepest-fish

Hiroshi Kitasato, a postdoctoral researcher at the Department of Marine Environmental Sciences, Tokyo University of Marine Science and Technology, was responsible for the research on the Japanese side. It was carried out as `` Ring of Fire 2022 (Ring of Fire 2022) by Pressure Drop '' by a research group consisting of universities and the University of Southern Denmark.

In September 2022, the research vessel DSSV Pressure Drop will explore the Japan Trench, Izu-Bogasawara Trench and Ryukyu Trench at depths of 8,000m as part of a decade-long study of the world's deepest fish populations.・We investigated 9300m and 7300m. The video of the fish certified by Guinness Records this time was taken at a depth of 8336 m in the Izu Ogasawara Trench, and the camera captures the appearance of an unknown species of the genus Pseudoliparis, which is considered to be a member of the Shinkai Kusauo , swimming.

The actual video released by the University of Western Australia is below, and the fish certified by Guinness World Records appears in the first half of the movie. The deepest record that a living fish has been confirmed so far is at a depth of 8178m in the Mariana Trench, and this time the video of the fish was taken at a place deeper than 150m.

Finding the world's deepest fish-YouTube


Many fish live at a depth of 8000 m or more, and despite the area being reasonably lively, the fish found at the deepest place in history were small juveniles. Normally, juveniles of deep-sea fish often live in shallower places than adults, but in the genus Pseudoliparis, juveniles often live deeper than adults.

In addition, two snailfish ( Pseudoliparis belyaevi ) were caught at a depth of 8022m in the Japan Trench a few days after the shooting. The deepest live fish ever caught was 7703m deep, making these two snailfish the first fish ever caught at a depth of over 8000m.

Alan Jamieson, a professor at the University of Western Australia and the expedition's lead scientist, said, 'The real takeaway for me is not that the fish live at 8336m, but rather the Izu-Bogasawara Trench. Having enough environmental information to predict that these trenches are where the deepest fish live – in fact, until this expedition, no one had ever seen fish from the entire trench. I didn't even collect it,' he commented.

In addition, according to NHK, the coverage team of the nature program ' Darwin has come! ' also participated in this observation survey, so we are looking forward to a special feature on new images and details of research.

``Ultra-deep sea'' Succeeded in shooting fish swimming in the world's deepest Tokyo University of Marine Science and Technology | NHK
https://www3.nhk.or.jp/news/html/20230402/k10014027071000.html