
Macrobrachium japonicum
Decapoda / Family: Palaemonidae
- Total length
- approx. 92 mm
- Range
- From Chiba (Pacific side) and Fukui (Japan sea side) to the Ryukyu Islands, the Ogasawara Islands, Korea, Taiwan, and Southeast Asia
In the diorama, it is ambushing its prey at the bottom of the water.
The second pair of legs, known as the pincers, is thick and flattened, which inspired its Japanese name, meaning "flattened hand prawn."
Unlike crabs, where the first pair of legs is the largest, in freshwater prawns, the second pair of legs is prominent. Males have larger pincers, which they use during fights. They are strongly carnivorous and occasionally capture and eat fish.

Habitat of This Animal:
B:Forest along the mountain ridge - B1:Forest near the settlement
Most of the forests in Tokunoshima Island are secondary forests that were once cleared in the past. Especially near the settlements, there are forests that have become well-lit thanks to recent pruning. Remains of paths, charcoal kilns, and fields form a reminder of the relationship between people and nature. Such forests accessible from settlements are inhabited by many living creatures fond of the well-lit environment.
This B1:Forest near the settlement