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Black fin eel

Anguilla bicolor

  • Fish
  • IUCN: Near threatened
  • Usual depth0–146 m
  • Water temperature19–30 °C
  • Best monthsOctober
  • How commonOccasional
All species

Photo credit: (c) Ken Puliafico, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

Anguilla bicolor is a species of eel in the genus Anguilla of the family Anguillidae, consisting of two subspecies.

Text from the Wikipedia article “Anguilla bicolor”, 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: 4 records
  • February: 5 records
  • March: 10 records
  • April: 11 records
  • May: 13 records
  • June: 11 records
  • July: 16 records
  • August: 13 records
  • September: 11 records
  • October: 28 records
  • November: 12 records
  • December: 4 records

Depth and water temperature

Depth

Mostly recorded at 0–146 m · Deepest record: 287 m

  • 0–10 m: 41 records
  • 10–20 m: 0 records
  • 20–30 m: 0 records
  • 30–40 m: 0 records
  • 40–50 m: 0 records
  • 50–60 m: 1 records
  • 60–70 m: 0 records
  • 70–80 m: 0 records
  • 80–90 m: 0 records
  • 90–100 m: 0 records
  • 100–110 m: 2 records
  • 110+ m: 5 records

Water temperature

Recorded in surface water of 19–30 °C

  • 18–20 °C: 1 records
  • 20–22 °C: 0 records
  • 22–24 °C: 3 records
  • 24–26 °C: 6 records
  • 26–28 °C: 10 records
  • 28–30 °C: 61 records

Names and classification

English
Black fin eel, Indian Shortfin Eel, Indonesian Shortfin eel, level-finned eel, Plain Short-finned Eel, Shortfin Eel, short-finned eel
Names in 6 more languages
Spanish
Anguila Bicolor, anguila de aleta corta
French
Anguille à nageoire courte, Anguille bicolore
Indonesian
Sidat anjing
Japanese
ニューギニアウナギ, バイカラウナギ
Thai
ปลาตูหนา, ปลาไหลหูดำ
Simplified Chinese
雙色鰻鱺

Other scientific names: Anguilla amblodon, Anguilla bicolour, Anguilla bleekeri, Anguilla cantori, Anguilla dussumieri, Anguilla malabarica, Anguilla moa, Anguilla mowa, Anguilla pacifica, Anguilla sidat, Anguilla spengeli, Anguilla virescens, Muraena halmaherensis, Muraena macrocephala, Muraena moa, Muraena virescens

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).
  • 796 open-data records from 1844 to 2024.
  • Species data updated October 26, 2026.

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