Hawaiian river shrimp (Macrobrachium grandimanus)
Source-cited species reference: taxonomy from WoRMS, biology from SeaLifeBase, occurrence map from GBIF, conservation from IUCN Red List.
Last updated
ffish.asia · via Wikipedia: Macrobrachium grandimanus · CC BY 4.0
Hawaiian river shrimp (Macrobrachium grandimanus) is a marine species in the family Palaemonidae (Arthropoda › Malacostraca › Decapoda), recorded in the World Register of Marine Species as Macrobrachium grandimanus (Randall, 1840) under AphiaID 587240.
Scientific classification
- KingdomAnimalia
- PhylumArthropoda
- CladePancrustacea
- ClassMalacostraca
- OrderDecapoda
- SuborderPleocyemata
- InfraorderCaridea
- FamilyPalaemonidae
- GenusMacrobrachium
- SpeciesMacrobrachium grandimanus
Named by Randall, 1840
Close relatives
Other species of Macrobrachium with a Codexery entry.
- Macrobrachium australiense Macrobrachium australiense
- Macrobrachium nobilii Macrobrachium nobilii
- Macrobrachium ohione Macrobrachium ohione
- Macrobrachium rosenbergii Macrobrachium rosenbergii
- Macrobrachium nipponense
Sources: Wikipedia taxobox: Macrobrachium grandimanus (CC BY-SA 4.0) · order, family and genus agree with WoRMS AphiaID 587240 (CC BY 4.0)
Conservation status
Least Concern (LC)
- LC▲ this species
- NT
- VU
- EN
- CR
- EW
- EX
Source: IUCN Red List assessment · GBIF copy of the Red List category
Where the hawaiian river shrimp (macrobrachium grandimanus) has been recorded
Each dot is a place where the species has been observed and reported (81 records, half-degree grid) — not a modelled range. 14 inland records left out (institution coordinates).
Map: drawn by Codexery. Data: GBIF occurrence search (records CC0 / CC BY) · Natural Earth basemap (public domain)
Classification (WoRMS)
Full classification as recorded by WoRMS: Kingdom: Animalia · Phylum: Arthropoda · Class: Malacostraca · Order: Decapoda · Family: Palaemonidae · Genus: Macrobrachium.
Accepted name: Macrobrachium grandimanus · Authority: (Randall, 1840) · Taxonomic status: accepted · AphiaID: 587240.
Synonyms and superseded combinations recorded for this taxon: Palaemon acutirostris Dana, 1852; Palemon grandimanus Randall, 1840.
Source: World Register of Marine Species (WoRMS) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=587240 (CC BY 4.0). Accessed 2026-09-25.
Biology and life history (SeaLifeBase)
Measured values published by SeaLifeBase for Macrobrachium grandimanus. Only fields the database actually holds for this species are shown; these are database values, not aquarium guidance.
Habitat zone: benthic.
Source: SeaLifeBase species summary (SpecCode 25319) — https://www.sealifebase.se/summary/Macrobrachium-grandimanus.html (CC BY-NC 3.0 — non-commercial use only). Accessed 2026-09-25.
Distribution and occurrence records (GBIF)
81 georeferenced occurrence records for Macrobrachium grandimanus are published through GBIF from 15 countries or marine areas. The map above plots 21 distinct locations from a sample of 81 records, omitting 14 inland records that carry an institution's coordinates rather than a collection site; it shows where the species has been observed and reported, not a modelled range.
Most records by country or area: United States of America (38); French Polynesia (13); Cook Islands (6); Philippines (6); Japan (5); Wallis and Futuna (3); New Caledonia (2); China (1); Fiji (1); South Georgia and the South Sandwich Islands (1); Guatemala (1); Indonesia (1); Tonga (1); Viet Nam (1); Vanuatu (1).
Source: GBIF Occurrence Search (taxonKey 2224757) — https://www.gbif.org/occurrence/search?taxon_key=2224757&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=587240 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-25.
Conservation status (IUCN Red List)
The IUCN Red List assesses Macrobrachium grandimanus (Randall, 1840) as Least Concern (code LC). No trend, population estimate or threat analysis is given here, because none is available from this source without the Red List API; follow the source link for the full assessment, including its date.
Source: IUCN Red List of Threatened Species (taxon 197590) — https://www.iucnredlist.org/species/197590/0; GBIF IUCN Red List category endpoint (taxonKey 2224757) — https://api.gbif.org/v1/species/2224757/iucnRedListCategory. Accessed 2026-09-25.
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Macrobrachium grandimanus (CC BY-SA 4.0).
- Classification: the source article's taxobox; order, family and genus checked against WoRMS, the World Register of Marine Species (CC BY 4.0).
- Conservation status: IUCN Red List assessment.
- Occurrence records: GBIF (CC0 / CC BY). Basemap: Natural Earth (public domain).
- Biology values: SeaLifeBase species summary (CC BY-NC 3.0, non-commercial).
- Word definitions: the , each quoted from its Wikipedia article.
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