''Macrobrachium japonicum'' is a species of freshwater
shrimp
Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...
found in Asia that was first described in 1849.
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References
Palaemonidae
Freshwater crustaceans of Asia
Crustaceans described in 1849
{{Caridea-stub