Thalamita sima, Four-lobed swimming crab
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Thalamita sima   Milne-Edwards, 1834

Four-lobed swimming crab

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Thalamita sima  AquaMaps  Data sources: GBIF OBIS
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Image of Thalamita sima (Four-lobed swimming crab)
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drawing shows typical species in Portunidae.

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

Malacostraca | Decapoda | Portunidae

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

Reef-associated; depth range 0 - 50 m (Ref. 125642).  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-Pacific: Red Sea, East Africa; to Japan, south to New Zealand; Hawaii.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 5.6 cm CW male/unsexed; (Ref. )

Biology     Glossary (e.g. epibenthic)

Intertidal (Ref. 76595) and subtidal (Ref. 106854). On sandflats or muddy-sandy substrates, to depths of 50 meters (Ref. 125642). Captures post-larval Homarus americanus (Ref. 116212). Omnivore (Ref. 116259).

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

Human uses


| FishSource |

Tools

E-book | Field guide

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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
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
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Taxonomy
Common names
Synonyms
Morphology
Pictures
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

Fishing Vulnerability (Ref. 71543): Low vulnerability (10 of 100).
Price category (Ref. 80766): Unknown.

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