Knife Finger Oyster
Cultellus attenuatus
- Water temperature13–29 °C
- Best monthsJuly and October
- How commonRare
Where and when
Where it has been recorded
Worldwide
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Best months
Worldwide (open data)
- January: 4 records
- February: 6 records
- March: 6 records
- April: 1 records
- May: 4 records
- June: 5 records
- July: 9 records
- August: 5 records
- September: 4 records
- October: 13 records
- November: 7 records
- December: 7 records
Depth and water temperature
Water temperature
Recorded in surface water of 13–29 °C
Names and classification
- English
- Knife Finger Oyster
Names in 2 more languages
- Japanese
- ユキノアシタ
- Korean
- 비단가리맛
Other scientific names: Cultellus scalpellum
Similar species
- Knife Finger Oyster
Ensiculus cultellus
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).
- 231 open-data records from 1903 to 2014.
- Species data updated November 1, 2026.
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