Fiddler crabs are small, semi-terrestrial crabs are characterized by extreme cheliped asymmetry in males. They are most closely related to the Ocypode (ghost crabs). There are currently 105 recognized extant species.
|Genera||Afruca, Austruca, Cranuca, Gelasimus, Leptuca, Minuca, Paraleptuca, Petruca, Tubuca, Uca, Xeruca|
The common English name “Fiddler Crab” comes from the feeding of the males, where the movement of the small claw from the ground to its mouth resembles the motion of a someone moving a bow across a fiddle (the large claw).