Taiwan belongs to the sand crabs fiddler crabs uca formosensis Division Trapezoidal carapace, carapace surface smooth, dark brown to gray exhaust color. Claws were scissors, a small finger was spoon-shaped claws. Like to bring part of the intertidal habitat, drier place. Is endemic to Taiwan, only Hsinchu Xiangshan, Changhua and Tainan estuary Shengang a larger population. Like living in a sunny place, so do not land in the habitat of mangrove species (Kandelia), or they can move right away Oh! Are endemic to Taiwan, Taiwan trick tide (uca formosensis), has a unique large scissors-like claws, Changhua Shengang people called "hinge Scissors" (ga-der-gien), which is the meaning of Taiwanese scissors; and Tainan Chiku people called "The Great Gong crab" (dwa-gong-hei), said male crab has a large chelipeds. Its body color is not protruding, dark brown body roughly, occasional faint light stain carapace, carapace, there are pale transverse band behind the large white claws two fingers, the palm section of part of brown, young individuals of the palm section then with orange tones. Taiwan's move tide is the most suitable habitat open, flat, clean pollution, the rural hinterland of the clay beaches, such as seamounts Kwu Hsinchu, Changhua Shengang, Chiku, Tainan has a grand wave of ethnic Taiwanese move. Because mangroves are more wet sticky soil, together with the advantages of living in mangrove tidal arc side strokes to compete, and so live in the mangrove tidal areas of Taiwan population is very small strokes, only bamboo around Taipei, Hsinchu flooding, Taichung High U.S., Putz, Chiayi, Taiwan, South Gate, Tainan and Penghu green grass Lun Lo. (