Bivalvia | Arcoida
Poutiers, J.M. 1998. (Ref. 348)
Size / Weight / Age
Max length : 7.5 cm TL male/unsexed; (Ref. 348); common length : 4.0 cm TL male/unsexed; (Ref. 348)
Benthic; depth range 5 - 50 m (Ref. 348)
Climate / Range
Indo-West Pacific: from Indonesia to Tonga Islands, north to Japan, and south to central Queensland and New Caledonia.
Shell rounded-subquadrate in outline, moderately inflated, slightly inequilateral, with rounded anterior and obtusely pointed posterior margin. Umbones not very prominent, slightly opisthogyrate and in front of midline of valves. External sculpture weak, with very low, rounded radial undulations and fine grooves, crossed by numerous, small concentric marks. Periostracum conspicuous, densely set with fine and short, dark brown hair. Colour: outside of shell brown, with irregular whitish flecks on the umbones and posterior third of valves. Posterodorsal margin often more or less tinged blackish brown. Interior white, variably tinged with purplish brown posteriorly.
In sublittoral muddy-sand bottoms (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)
Threat to humans
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Estimation of some characteristics with mathematical models
Low vulnerability (10 of 100)