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Pinctada radiata   (Leach, 1814)

rayed pearl oyster

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Pinctada radiata   AquaMaps   Data sources: GBIF OBIS
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Image of Pinctada radiata (rayed pearl oyster)
Picture by Coltro, Marcus

Classification Common names | Synonyms | CoL | ITIS | WoRMS

Bivalvia | Pterioida | Pteriidae

Main reference References | Biblio | Coordinator | Collaborators

Poutiers, J.M. 1998. (Ref. 348)

Size / Weight / Age

Common length : 6.0 cm male/unsexed; (Ref. 348)


Benthic; depth range 0 - 150 m (Ref. 348), usually 5 - 25 m (Ref. 348)

Climate / Range


Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-Pacific and the Mediterranean Sea: from East Africa, to Melanesia and Hawaii; north to Japan and south to northern Victoria. Mediterranean Sea: Greece. Subtropical.

Short description

Shell rather thin and small to medium sized, relatively inflated, subquadrate in outline, with a short and ill defined posterior ear which is not drawn out into a wing-like process. Dorsal margin relatively long, anterior margin protruding only slightly or not at all beyond the tip of anterior ear. Outer surface of shell, when not worn, with densely set, appressed and flattened, imbricating concentric scales and moderately small, radially projecting spines mostly preserved towards the margins. Hinge line with 2 small teeth in each valve: 1 rounded anterior tubercle just in front of the umbo, and 1 posterior ridge, situated behind the ligamental area and almost parallel to dorsal margin. A small accessory ridge sometimes present above the posterior tooth of right valve. Colour: outside of shell variable, uniform or with darker markings or radial rays, mostly of reds and browns, but sometimes of green and bronze coloration. internal nacreous area highly iridescent. Non-nacreous margin glossy, light brown with dark brown or reddish blotches corresponding to the main external rays.

Biology     Glossary (e.g. epibenthic)

Collected in many areas of the Indo-West Pacific for its edible muscle, nacreous shell and ability to develop pearls (348). Byssally attached to rocks, dead corals and various submerged objects, often forming large natural banks. On soft bottoms, they aggregate to one another. Littoral, sublittoral and shelf zone, from low tide levels to a depth of about 150 m. Most common on sublittoral bottoms, from depths of 5 to 25 m (Ref. 348). Members of the class Bivalvia are mostly gonochoric, some are protandric hermaphrodites. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam (Ref. 833).

IUCN Red List Status (Ref. 114614)


CITES status (Ref. 94142)

Not Evaluated

Threat to humans

Human uses

Fisheries: commercial
| FisheriesWiki |

More information

FAO areas
Food items
Common names
Egg development
Mass conversion

Internet sources

BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | ispecies | National databases | PubMed | Scirus | FishBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimation of some characteristics with mathematical models

Price category (Ref. 80766)