Pseudoliparis amblystomopsis explained

Pseudoliparis amblystomopsis, or the hadal snailfish, is a species of snailfish from the hadal zone of the Northwest Pacific Ocean, including the Kuril–Kamchatka and Japan Trenches.^[1]

In October 2008, a team from British and Japanese institutes discovered a shoal of Pseudoliparis amblystomopsis at a depth of about 7700-2NaN-2 in the Japan Trench. These were, at the time, the deepest living fish ever recorded on film.^[2] The record was surpassed by a type of snailfish filmed at a depth of 8145-2NaN-2 in December 2014,^[3] and extended in May 2017 when another snailfish was filmed at a depth of 8178-2NaN-2.^[4] This deepest-water so-called ethereal snailfish remains undescribed,^[1] but a close relative found only slightly shallower in the Mariana Trench was described as Pseudoliparis swirei in late 2017.^{[5] [6]}

Notes and References

1. Linley, T.D.. M.E. Gerringer. P.H. Yancey. J.C. Drazen. C.L. Weinstock. A.J. Jamieson. 2016. Fishes of the hadal zone including new species, in situ observations and depth records of Liparidae. Deep Sea Research Part I: Oceanographic Research Papers. 114. 99–110. 10.1016/j.dsr.2016.05.003. 2016DSRI..114...99L . free.
2. News: 'Deepest ever' living fish filmed. Morelle. Rebecca. Rebecca Morelle. 2008-10-07. BBC News. 2017-11-29. en-GB.
3. News: Rebecca . Morelle . New record for deepest fish . . 2014-12-19 . 2017-08-26.
4. News: Ghostly fish in Mariana Trench in the Pacific is deepest ever recorded . . 2017-08-25 . 2017-08-26.
5. News: Irving. Michael. New Mariana Trench species is the deepest-dwelling fish in the ocean. New Atlas. 29 November 2017. 29 November 2017.
6. Gerringer, M.E.. T.D. Linley. P.H. Yancey. A.J. Jamieson. E. Goetze. J.C. Drazen. 2017. Pseudoliparis swirei sp. nov.: A newly-discovered hadal snailfish (Scorpaeniformes: Liparidae) from the Mariana Trench. Zootaxa. 4358. 1. 10.11646/zootaxa.4358.1.7. 29245485. 161–177. free.