Giant Japanese oyster

There are between 50-100 specie of oyster, but only 10-20 are fished or farmed. On this page you can read about three of them.
   The most economically important of these is probably the Giant Japanese oyster, Crassostrea gigas. It has a longer form and can be up to 30 cm long. Besides its form, another difference is that it has a purple scar after the adductor, while the oyster has a white. It can be as old as the common oyster. The Giant Japanese oyster originates from the western Pacific Ocean, but has been farmed in many other areas, including Europe, for the last 100 years. Even in Bohuslän on the Swedish west coast people have tried farming this species.

Other specie

The most common oyster species on the American east coast is known as the Atlantic oyster, Crassostrea virginica. It is oval in shape and can be up to 25 cm long.
   Another species that has its origins in Europe is the Portuguese oyster Crassostrea angulata, lives in southern Europe and has roughly the same form as the Giant Japanese oyster. It can be 15 cm long. Today, such populations are small because farming has gone over to the European and the Giant Japanese oyster.

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Ancient food

European oyster

Giant Japanese oyster

Other specie

Royal dish

Varying catches


Extensive farming

Intensive farming

Oyster     More facts     Other names
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Bo Johannesson | Martin Larsvik | Lars-Ove Loo | Helena Samuelsson