Bivalvia | Veneroida
Poutiers, J.M. 1998. (Ref. 348)
Size / Weight / Age
Max length : 40.0 cm SHL male/unsexed; (Ref. 348); common length : 20.0 cm SHL male/unsexed; (Ref. 348)
Reef-associated; depth range 0 - 30 m (Ref. 348)
Climate / Range
Tropical; 23°C - 30°C (Ref. 102835); 29°N - 28°S, 91°E - 170°W
The valves are thick, heavy and triangular in shape, often covered with reddish spots and obscured by encrustations. The mantle is a deep yellowgreen, irregularly mottled at the periphery and in the center.
Collected for food and shell, the latter commonly used in the shellcraft industry (Ref. 348). Maximum depth from Ref. 75831. In relatively shallow water, in lagoon, barrier and fringing reefs (Ref. 106851). Found in intertidal areas on corals (Ref. 75831). Tridacnids derive their nutrition from uptake of dissolved matter through their epidermis and from their symbiotic zooanthella Symbiodinium microadriaticum (Ref. 107098). Broadcast spawners. 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)
Threat to humans
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Estimation of some characteristics with mathematical models
Moderate to high vulnerability (50 of 100)