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Japanese butterflyray

Gymnura japonica

  • Sharks and rays
  • IUCN: Vulnerable
  • Usual depth3–30 m
  • Water temperature18–29 °C
  • Best monthsJanuary, May, and October
  • How commonRare
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About this species

Gymnura japonica, the Japanese butterfly ray, is a species of ray in the family Gymnuridae. It is found from Japan to Cambodia.

Text from the Wikipedia article “Gymnura japonica”, 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: 8 records
  • February: 3 records
  • March: 0 records
  • April: 5 records
  • May: 11 records
  • June: 1 records
  • July: 3 records
  • August: 7 records
  • September: 1 records
  • October: 8 records
  • November: 0 records
  • December: 2 records

Depth and water temperature

Depth

Mostly recorded at 3–30 m · Deepest record: 37.5 m

  • 0–10 m: 1 records
  • 10–20 m: 3 records
  • 20–30 m: 4 records
  • 30–40 m: 2 records

Water temperature

Recorded in surface water of 18–29 °C

  • 18–20 °C: 22 records
  • 20–22 °C: 1 records
  • 22–24 °C: 5 records
  • 24–26 °C: 1 records
  • 26–28 °C: 1 records
  • 28–30 °C: 1 records

Names and classification

English
Japanese butterflyray, Japanese Butterfly Ray, Twin-spot Butterfly Ray
Names in 4 more languages
German
Japanischer Schmetterlingsrochen
Japanese
Tsubakuro-ei, Tsubakuroei, ツバクロエイ
Thai
ปลากระเบนผีเสื้อญี่ปุ่น
Simplified Chinese
日本燕魟, 日本鳶魟, 臭尿破魴, 魴仔

Other scientific names: Gymmura japonica, Pteroplatea japonica

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).
  • 95 open-data records from 1936 to 2021.
  • Species data updated November 3, 2026.

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