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Gilbert's halosaurid

Aldrovandia affinis

  • Fish
  • IUCN: Least concern
  • Usual depth775–1,766 m
  • Water temperature10–30 °C
  • Best monthsAugust
  • How commonOccasional
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About this species

Aldrovandia is a genus of ray-finned fish in the family Halosauridae. They occur in the Pacific, Atlantic, and Indian Oceans. They can reach 55 cm (22 in) in total length.

Text from the Wikipedia article “Aldrovandia”, 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: 11 records
  • February: 12 records
  • March: 6 records
  • April: 9 records
  • May: 15 records
  • June: 44 records
  • July: 34 records
  • August: 85 records
  • September: 15 records
  • October: 13 records
  • November: 23 records
  • December: 18 records

Depth and water temperature

Depth

Mostly recorded at 775–1,766 m · Deepest record: 3,166 m

  • 100–110 m: 1 records
  • 110–120 m: 0 records
  • 120–130 m: 0 records
  • 130–140 m: 0 records
  • 140–150 m: 0 records
  • 150–160 m: 0 records
  • 160–170 m: 0 records
  • 170–180 m: 0 records
  • 180–190 m: 0 records
  • 190–200 m: 0 records
  • 200–210 m: 0 records
  • 210+ m: 211 records

Water temperature

Recorded in surface water of 10–30 °C

  • 8–10 °C: 1 records
  • 10–12 °C: 76 records
  • 12–14 °C: 12 records
  • 14–16 °C: 24 records
  • 16–18 °C: 26 records
  • 18–20 °C: 20 records
  • 20–22 °C: 20 records
  • 22–24 °C: 25 records
  • 24–26 °C: 36 records
  • 26–28 °C: 41 records
  • 28–30 °C: 25 records

Names and classification

English
Gilbert's halosaurid, Allied Halosaur, Allied Lizardfish, Gilbert's Halosaurid Fish, Halosaur, rattailed lizardfish
Names in 3 more languages
Japanese
Tokagegisu, トカゲギス
Korean
발광멸
Simplified Chinese
異鱗海蜴魚

Other scientific names: Aldrovandia pallida, Halosauropsis affinis, Halosauropsis proboscidea, Halosaurus affinis, Halosaurus anguilliformis, Halosaurus hoskynii

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).
  • 655 open-data records from 1877 to 2022.
  • Species data updated October 26, 2026.

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