New maximum depth record for bony fish: Teleostei, Scorpaeniformes, Liparidae (8336 m, Izu-Ogasawara Trench)

Alan J. Jamieson, Paige J. Maroni, Todd Bond, Yakufu Niyazi, Jessica Kolbusz, Prema Arasu, Hiroshi Kitazato

Research output: Contribution to journalArticlepeer-review

Abstract

A new maximum depth record for bony fish (Teleostei) has been set at 8336 m deep in the Izu- Ogasawara Trench (NW Pacific Ocean) represented by video imagery of a snailfish probably Pseupodoliapris belyaevi or a new, endemic species since no physical specimen was captured. Sampling by trap and video was undertaken between 4534 and 9773 m and snailfish (Liparidae) were observed between 6824 and 8336 m, the deepest being a solitary juvenile. In the neighbouring Japan Trench, 31 deployments were made between 4913 and 8022 m and P. belyaevi was observed in 22 of the 24 deployments >6579 m. Two specimens, identified as P. belyaevi, were collected from 8022 m and represent the deepest fish ever caught. In the Japan and Izu-Ogasawara trenches at 6579–7001 m and 6824–7050 m, respectively, two other snailfish species were observed (Liparid sp. indet. 4-JPT and Liparid sp. indet. 4-IOT). A species of snailfish belonging to the putative ‘ethereal’ morphotype was also observed in the Japan Trench at 7621 and 8022 m (Liparid sp. indet. 3-JPT), but its identification beyond family is still obscure. This study also documents the first hadal fish from the Ryukyu Trench (Liparid sp. indet. 1-RKT) at 7079 and 7339 m.

Original languageEnglish
Article number104132
JournalDeep-Sea Research Part I: Oceanographic Research Papers
Volume199
DOIs
StatePublished - Sep 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 The Authors

Keywords

  • Deep sea
  • Depth distribution
  • Hadal zone
  • Pacific ocean
  • Snailfish

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

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