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Rugose Clubhook Squid

Onykia robsoni

  • Cephalopods
  • IUCN: Least concern
  • Usual depth687–1,180 m
  • Water temperature6–26 °C
  • Best monthsJanuary and July
  • How commonOccasional
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About this species

Onykia robsoni, the rugose hooked squid, is a species of squid in the family Onychoteuthidae. It occurs in the Antarctic Ocean, at an estimated depth of 250–550 meters. The mantle of this species grows to a length of 75 cm. The species has been suggested as a junior synonym of Onykia carriboea, the tropical clubhook squid, due to similarities between the species.

Text from the Wikipedia article “Onykia robsoni”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

  • January: 18 records
  • February: 10 records
  • March: 1 records
  • April: 1 records
  • May: 4 records
  • June: 9 records
  • July: 16 records
  • August: 9 records
  • September: 3 records
  • October: 4 records
  • November: 8 records
  • December: 7 records

Depth and water temperature

Depth

Mostly recorded at 687–1,180 m · Deepest record: 1,961 m

  • 360–370 m: 1 records
  • 370–380 m: 0 records
  • 380–390 m: 0 records
  • 390–400 m: 0 records
  • 400–410 m: 1 records
  • 410–420 m: 0 records
  • 420–430 m: 1 records
  • 430–440 m: 0 records
  • 440–450 m: 1 records
  • 450–460 m: 0 records
  • 460–470 m: 0 records
  • 470+ m: 517 records

Water temperature

Recorded in surface water of 6–26 °C

  • 6–8 °C: 20 records
  • 8–10 °C: 83 records
  • 10–12 °C: 97 records
  • 12–14 °C: 107 records
  • 14–16 °C: 203 records
  • 16–18 °C: 29 records
  • 18–20 °C: 11 records
  • 20–22 °C: 2 records
  • 22–24 °C: 3 records
  • 24–26 °C: 0 records
  • 26–28 °C: 1 records

Names and classification

English
Rugose Clubhook Squid, Warty Squid
Names in 3 more languages
Spanish
Lurión rugoso
French
Cornet rugueux
Japanese
アフリカニュウドウイカ

Other scientific names: Moroteuthis robsoni

Similar species

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

  • Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
  • Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
  • Conservation status as published by GBIF (IUCN Red List).
  • 559 open-data records from 1971 to 2024.
  • Species data updated November 5, 2026.

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