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Grideye fish

Ipnops agassizii

  • Fish
  • IUCN: Least concern
  • Usual depth1,280–2,630 m
  • Water temperature17–30 °C
  • Best monthsMay and November
  • How commonRare
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About this species

Ipnops is a genus of deep-sea fish in the family Ipnopidae, which also includes the better-known tripodfish. Ipnops are small, slender fish that live close to the ocean floor in the bathyal and abyssal zones. The genus is notable for its unusual eyes.

Text from the Wikipedia article “Ipnops”, 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: 0 records
  • February: 1 records
  • March: 0 records
  • April: 2 records
  • May: 5 records
  • June: 1 records
  • July: 1 records
  • August: 1 records
  • September: 2 records
  • October: 1 records
  • November: 3 records
  • December: 1 records

Depth and water temperature

Depth

Mostly recorded at 1,280–2,630 m · Deepest record: 2,820 m

  • 590–600 m: 10 records

Water temperature

Recorded in surface water of 17–30 °C

  • 16–18 °C: 1 records
  • 18–20 °C: 0 records
  • 20–22 °C: 1 records
  • 22–24 °C: 1 records
  • 24–26 °C: 0 records
  • 26–28 °C: 4 records
  • 28–30 °C: 11 records

Names and classification

English
Grideye fish
Names in 1 more languages
Japanese
Chochinhadaka, チョウチンハダカ

Other scientific names: Ipnoceps pristibrachium, Ipnops agassizi

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).
  • 59 open-data records from 1891 to 1994.
  • Species data updated November 3, 2026.

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