a fiddler crab, sometimes known as a calling crab

100 animalia any approximately are arthropoda beach big biola calling clamp claw claws closely crab crabs dimorphism dwimorfisme ecosystem family fiddler forest genus ghost kepiting known make malacostraca mangrove marine may members minax most moulting ocypode ocypodidae related sand semiterrestrial shell small sometimes species tweezers uca ucinae vocans which