
Pod tree oyster
Isognomon legumen
- Water temperature20–30 °C
- Best monthsJuly, September, and October
- How commonRare
Photo credit: (c) Fotios Christodoulou, some rights reserved (CC BY) · CC BY · iNaturalist
Where and when
Where it has been recorded
Worldwide
Loading the map
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
Photos

(c) Fotios Christodoulou, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Eleftherios Katsillis, some rights reserved (CC BY) · CC BY · iNaturalist
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
Round Toothed OysterIsognomon ephippium
Elongate Toothed OysterIsognomon isognomum

Brown Purse ShellIsognomon perna
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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