Invertebrate · GBIF taxon 9465889
Calling Fiddler Crab
Gelasimus vocansCalling Fiddler Crab males carry one greatly enlarged claw used in waving displays, while the smaller claw handles food. Colonies emerge on exposed tropical mudflats to sift organic particles from sediment.
Intertidal CrabWaving DisplayDeposit Feeder
Licensed referenceBernard DUPONT from FRANCE / CC BY-SA 2.0 · cc-by-sa
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Algae, microbes, and organic particles sifted from mud
Predators
- Shorebirds
- Fish
- Larger crabs
ThreatsMangrove clearing, shoreline hardening, pollution, and trampling
HabitatsMangrove margins, sheltered mudflats, and tidal creek banks
Life spanAbout 1 to 3 years
Size / weightNot available
Classification
- FamilyOcypodidae
- SpeciesGelasimus vocans
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Watch from firm ground and avoid collapsing occupied burrows.
Responsible observation
- Tide: Visit as falling water exposes undisturbed mud.
- Display: Watch males wave the enlarged claw without approaching.
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