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Pod tree oyster

Isognomon legumen

  • Molluscs
  • IUCN: Not evaluated
  • Water temperature20–30 °C
  • Best monthsJuly, September, and October
  • How commonRare
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Photo credit: (c) Fotios Christodoulou, some rights reserved (CC BY) · CC BY · iNaturalist

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

  • January: 10 records
  • February: 14 records
  • March: 8 records
  • April: 6 records
  • May: 8 records
  • June: 8 records
  • July: 22 records
  • August: 14 records
  • September: 18 records
  • October: 15 records
  • November: 4 records
  • December: 2 records

Depth and water temperature

Water temperature

Recorded in surface water of 20–30 °C

  • 18–20 °C: 3 records
  • 20–22 °C: 1 records
  • 22–24 °C: 31 records
  • 24–26 °C: 37 records
  • 26–28 °C: 19 records
  • 28–30 °C: 50 records

Names and classification

English
Pod tree oyster, Irregular Toothed Oyster, pod tree oyster
Names in 2 more languages
Japanese
シロアオリ
Simplified Chinese
白障泥蛤, 莢豆鉗蛤

Other scientific names: Isognomon vulsella, Malleoperna intricata, Malleoperna paucidentata, Ostrea legumen, Perna caudata, Perna dactylus, Perna laticostata, Perna lentiginosa, Perna linguaeformis, Perna maillardi, Perna spengleri, Perna torva, Perna vulsella

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.
  • Conservation status as published by GBIF (IUCN Red List).
  • 150 open-data records from 1791 to 2021.
  • Species data updated November 3, 2026.

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