''Pseudoliparis amblystomopsis'', or the hadal snailfish, is a species of snailfish from the hadal zone of the Northwest

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

, including the Kuril–Kamchatka and Japan Trenches. In October 2008, a team from British and Japanese institutes discovered a

shoal In oceanography, geomorphology, and Earth science, geoscience, a shoal is a natural submerged ridge, bank (geography), bank, or bar that consists of, or is covered by, sand or other unconsolidated material, and rises from the bed of a body ...

of ''Pseudoliparis amblystomopsis'' at a depth of about in the Japan Trench. These were, at the time, the deepest living

fish A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...

ever recorded on film. The record was surpassed by a type of snailfish filmed at a depth of in December 2014, and extended in May 2017 when another snailfish was filmed at a depth of . This deepest-water so-called ethereal snailfish remains undescribed, but a close relative found only slightly shallower in the Mariana Trench was described as '' Pseudoliparis swirei'' in late 2017.

References

{{DEFAULTSORT:Pseudoliparis Amblystomopsis Pseudoliparis Fish described in 1955 Taxa named by Anatoly Andriyashev