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migigarei

Dexistes rikuzenius

  • Fish
  • IUCN: Least concern
  • Usual depth99–500 m
  • Water temperature9–20 °C
  • Best monthsApril, June, and November
  • How commonRare
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About this species

The Rikuzen flounder is a flatfish of the family Pleuronectidae. It is a demersal fish that lives on sandy and muddy bottoms in temperate waters at depths of between 42 and 200 metres. Its native habitat is the northwestern Pacific, particularly the Sea of Japan and the coastlines of Japan and Korea. It grows up to 22 centimetres (8.7 in) in length.

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

Depth and water temperature

Depth

Mostly recorded at 99–500 m · Deepest record: 650 m

  • 70–80 m: 1 records
  • 80–90 m: 0 records
  • 90–100 m: 1 records
  • 100–110 m: 1 records
  • 110–120 m: 1 records
  • 120–130 m: 0 records
  • 130–140 m: 0 records
  • 140–150 m: 3 records
  • 150–160 m: 2 records
  • 160–170 m: 1 records
  • 170–180 m: 0 records
  • 180+ m: 4 records

Water temperature

Recorded in surface water of 9–20 °C

  • 8–10 °C: 1 records
  • 10–12 °C: 0 records
  • 12–14 °C: 2 records
  • 14–16 °C: 3 records
  • 16–18 °C: 3 records
  • 18–20 °C: 2 records
  • 20–22 °C: 3 records

Names and classification

English
migigarei, rikuzen flounder, Rikuzen Sole
Names in 3 more languages
Japanese
Migi-garei, Migigarei, ミギガレイ
Korean
눈가자미, 눈가자미속
Simplified Chinese
日本小口鰈

Other scientific names: Araias ariommus

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).
  • 28 open-data records from 1906 to 2009.
  • Species data updated November 2, 2026.

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