Gelasimus vocans, Orange fiddler crab
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Gelasimus vocans   (Linnaeus, 1758)

Orange fiddler crab
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drawing shows typical species in Ocypodidae.

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Malacostraca | Decapoda | Ocypodidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic; brackish.  Tropical; 30°N - 34°S, 30°E - 171°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-West Pacific: From East Africa to Samoa, Red Sea to Natal and Okinawa, Japan to subtropical Australia.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm

Biology     Glossary (e.g. epibenthic)

Associated with muddy habitats in lagoonal beach (Ref. 104858). Also on muddy-sandy tidal flats (Ref. 104857). Reported to form droves (Ref. 104860). Feeds on emerged sand and in shallow water along the shoreline and in pools. Makes sand pellets while feeding to separate edible from inedible fractions (Ref. 104857).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Members of the order Decapoda are mostly gonochoric. Mating behavior: Precopulatory courtship ritual is common (through olfactory and tactile cues); usually indirect sperm transfer.

Main reference References | Coordinator | Collaborators

Walker, A.O. 1887 Notes on a collection of Crustacea from Singapore. Zoological Journal of the Linnean Society 20(118):107-117. (Ref. 77883)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses


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Trophic Ecology
Food items (preys)
Diet composition
Food consumption
Predators
Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Distribution
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FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
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Taxonomy
Common names
Synonyms
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References
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 27.8 - 29.3, mean 28.8 (based on 1849 cells).

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