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''Sinonovacula constricta'', the constricted tagelus, Chinese razor clam or Agemaki clam, is a commercially important species of 
Clams from Duotou village in
bivalve
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...
native to the estuaries and mudflats of China and Japan. It is extensively aquafarmed in China and other countries, with 742,084 tons worth US$667,876,000 harvested in 2008.
Clams from Duotou village in Putian
Putian or Putien (, Putian dialect: ''Pó-chéng''), also known as Puyang (莆阳) and Puxian (莆仙), historically known as Xinghua or Hing Hwa (), is a prefecture-level city in eastern Fujian province, China. It borders Fuzhou City to the nor ...
city, Fujian
Fujian (; alternately romanized as Fukien or Hokkien) is a province on the southeastern coast of China. Fujian is bordered by Zhejiang to the north, Jiangxi to the west, Guangdong to the south, and the Taiwan Strait to the east. Its capi ...
are particularly famous, and are a key ingredient in Putian cuisine
Putian cuisine, also known as Henghwa cuisine or Henghua cuisine, is a style of Chinese cuisine originating from the Putian people of Putian, Fujian, Fujian Province. It is a style of Fujian cuisine.
Since Putian is a coastal area, ingredient ...
.
References
{{Taxonbar, from1=Q11128398 Pharidae Bivalves described in 1818 Taxa named by Jean-Baptiste Lamarck