Pseudoliparis amblystomopsis

Pseudoliparis amblystomopsis, or the hadal snailfish, is a species of snailfish from the hadal zone of the Northwest Pacific Ocean,[1] including the Kuril–Kamchatka and Japan Trenches.[2]

Pseudoliparis amblystomopsis
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Liparidae
Genus: Pseudoliparis
P. amblystomopsis
Binomial name
Pseudoliparis amblystomopsis
(Andriashev, 1955)

In October 2008, a team from British and Japanese institutes discovered a shoal of Pseudoliparis amblystomopsis at a depth of about 7,700 m (25,300 ft) in the Japan Trench. These were, at the time, the deepest living fish ever recorded on film.[3] The record was surpassed by a type of snailfish filmed at a depth of 8,145 m (26,700 ft) in December 2014,[4] and extended in May 2017 when another snailfish was filmed at a depth of 8,178 m (26,800 ft).[5] This deepest-water so-called ethereal snailfish remain undescribed,[2] but a close relative found only slightly shallower in the Mariana Trench was described as Pseudoliparis swirei in late 2017.[6][7]


  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2009). "Pseudoliparis amblystomopsis" in FishBase. March 2009 version.
  2. ^ a b 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. doi:10.1016/j.dsr.2016.05.003.
  3. ^ Morelle, Rebecca (2008-10-07). "'Deepest ever' living fish filmed". BBC News. Retrieved 2017-11-29.
  4. ^ Morelle, Rebecca (2014-12-19). "New record for deepest fish". BBC News. Retrieved 2017-08-26.
  5. ^ "Ghostly fish in Mariana Trench in the Pacific is deepest ever recorded". CBC News. 2017-08-25. Retrieved 2017-08-26.
  6. ^ Irving, Michael (29 November 2017). "New Mariana Trench species is the deepest-dwelling fish in the ocean". New Atlas. Retrieved 29 November 2017.
  7. ^ 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): 161–177. doi:10.11646/zootaxa.4358.1.7. PMID 29245485.