Charybdis affinis Dana, 1852
Smoothshelled swimming crab
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Family:  Portunidae (swimming crabs)
Max. size:  6 cm CW (male/unsexed)
Environment:  benthic; marine
Distribution:  Indo-West Pacific: China and Japan to various parts of India and Southeast Asia.
Diagnosis:   
Biology:  Found intertidal and subtidal, on substrates of sand or muddy sand (Ref. 125642).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans:  harmless
Country info:  Known from Tolo Harbour, Tolo Channel, and Mirs Bay (Ref. 109414). Also known around Lamma Island, off southwest of Lantau Island, and west of Tuen Mun (Ref. 125642). C: Ref. 109414, 125642.

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