Theora fragilis (Adams, 1856)
Fragile semele
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Family:  Semelidae ()
Max. size:  max. reported age: 2 years
Environment:  benthic; marine
Distribution:  Western Pacific.
Diagnosis:   
Biology:  Found intertidal in mud (Ref. 53).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:  Known from Hokkaido to Kyushu.

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