- English Common Name
- Bicolor Pen Shell
- Scientific name
- Pinna atropurpurea
- Taxonomy
- Order: Ostreida, Family: Pinnidae
- Size
- About 40 cm
- Species Distribution
- Amamioshima and Okinawa Islands, the Philippines, Indo-Pacific, East Africa
- Okinawan Common Name
- Kira-bui, Tui-minah, Tabaquinah
- Okinawa Red List of Threatened Species: Vulnerable
- Japan Red List of Threatened Species: Vulnerable
- This is large sized clam and related to Pen Shell, Atrina pectinata. This species is found in and around seagrass bed. It dives in the ground as if it is sticking into the substrate. It is collected for food in some areas.
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- Updated September 2017
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