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New Zealand longfin eel

Anguilla dieffenbachii

  • Fish
  • IUCN: Endangered
  • Usual depth2–500 m
  • Water temperature8–15 °C
  • Best monthsNovember
  • How commonOccasional
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About this species

The New Zealand longfin eel is a species of freshwater eel that is endemic to New Zealand. It is the largest freshwater eel in New Zealand and the only endemic species – the other eels found in New Zealand are the native shortfin eel, also found in Australia, and the naturally introduced Australian longfin eel. Longfin eels are long-lived, migrating to an unknown site in the tropical Pacific Ocean to breed at the end of their lives. They are good climbers as juveniles and so are found in streams and lakes a long way inland. An important traditional food source for Māori, longfin eel numbers are declining and they are classified as endangered, but over one hundred tonnes are still commercially fished each year.

Text from the Wikipedia article “New Zealand longfin eel”, 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: 0 records
  • May: 0 records
  • June: 0 records
  • July: 0 records
  • August: 1 records
  • September: 0 records
  • October: 0 records
  • November: 2 records
  • December: 0 records

Depth and water temperature

Depth

Mostly recorded at 2–500 m · Deepest record: 530 m

  • 0–10 m: 6 records
  • 10–20 m: 0 records
  • 20–30 m: 0 records
  • 30–40 m: 0 records
  • 40–50 m: 0 records
  • 50–60 m: 0 records
  • 60–70 m: 2 records
  • 70–80 m: 0 records
  • 80–90 m: 0 records
  • 90–100 m: 0 records
  • 100–110 m: 0 records
  • 110+ m: 27 records

Water temperature

Recorded in surface water of 8–15 °C

  • 6–8 °C: 1 records
  • 8–10 °C: 0 records
  • 10–12 °C: 8 records
  • 12–14 °C: 21 records
  • 14–16 °C: 2 records

Names and classification

English
New Zealand longfin eel, Longfin eel, Longfinned Eel
Names in 2 more languages
German
Neuseeländischer Langflossenaal
French
Anguille de Nouvelle-Zélande

Other scientific names: Anguilla dieffenbachi

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).
  • 394 open-data records from 1962 to 2019.

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