Bivalvia | Veneroida
Environment: milieu / climate zone / depth range / distribution range
Reef-associated; depth range 0 - 30 m (Ref. 348). Tropical; 23°C - 30°C (Ref. 102835); 29°N - 28°S, 91°E - 170°W
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 13 - 15 cm Max length : 50.0 cm SHL male/unsexed; (Ref. 117184); common length : 20.0 cm SHL male/unsexed; (Ref. 348)
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).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Broadcast spawners. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam (Ref. 833).
Poutiers, J.M. 1998. (Ref. 348)
IUCN Red List Status (Ref. 119314)
CITES status (Ref. 108899)
Threat to humans
Fisheries: commercial; aquaculture: commercial
| FishSource | Sea Around Us
Estimates of some properties based on models
): 25.6 - 29.3, mean 28.7 (based on 2485 cells).
Moderate to high vulnerability (50 of 100)