| Family: |
Arcidae () |
| Max. size: |
9 cm TL (male/unsexed) |
| Environment: |
benthic; marine; depth range 0 - 20 m |
| Distribution: |
Indo-Pacific: East Africa to Red Sea and Polynesia. |
| Diagnosis: |
Shell equivalve, thick and inflated, very inequilateral, posteriorly expanded. Shape somewhat irregular, elongate rectangular in outline, with strongly protruding umbones anteriorly and a broad rounded keel from umbones to posteroventral margin. Posterior margin obliquely truncate, ventral margin slightly sinuous with a well-developed byssal gape. Cardinal area wide and riblets crossed by irregular growth marks, and a few larger radial ribs on posterodorsal slope. Periostracum coarsely pilose, mainly persisting towards shell margins. Hinge straight very long and narrow. Internal margins smooth. Colour: Outside of shell often encrusted with marine growths; posterior half dark brown, anterior half creamy white with zebra-like brown stripes. Inner side more or less strongly tinged with dark brown. |
| Biology: |
Found in reef areas of lagoons (Ref. 97298). Fixed on rocks, corals, or under stones. Littoral to sublittoral waters to a depth of 20 m (Ref. 348). |
| IUCN Red List Status: |
Not Evaluated (N.E.) Ref. 123251)
|
| Threat to humans: |
harmless |
| Country info: |
|
Source and more info: www.sealifebase.org. For personal, classroom, and other internal use only. Not for publication.
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