Uca Crabs or also called Fiddler Crabs have many species, live on sandy or muddy beaches, They are often found on dry beach and a little water,
Uca Crab has a funny behavior of meal times, all done at the same time. These crabs include small crabs, the largest is only about 2-3 cm, not Like all crabs, Uca Crabs change shells as they grow big,
This crab has only one claw only and eight feet between the left and right body.
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From @sanjaii