''Macrobrachium formosense'', the crane river prawn, 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 ...

in the family Palaemonidae. It lives in streams and rivers in Taiwan and southern

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

, including the Ryukyu Islands. ''Macrobrachium formosense'' reaches a

carapace A carapace is a Dorsum (biology), dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tor ...

length of .

References

Palaemonidae Freshwater crustaceans of Asia Crustaceans described in 1868 Crustaceans of Japan Arthropods of Taiwan {{Caridea-stub