| Arcidae () |
| 9 cm SHL (male/unsexed); max. reported age: 12 years |
|
benthic; brackish; marine; depth range 0 - 20 m |
| Indo-Pacific. |
|
Shell equivalve, thick and solid, ovate, strongly inflated, slightly longer than high and feebly inequilateral. Umbones strongly protruding, cardinal area rather large. About 18 radial ribs (15 to 20) with wide interstices at each valve; ribs stout and distinctly rugose, bearing regular, often rectangular nodules. Periostracum rather thin and smooth. Internal margins with strong crenulations corresponding with the external radial ribs. No byssal gape. Colour: outside of shell white under the yellowish brown periostracum. Inner side white, often tinged yellow towards the umbonal cavity. |
| This represents the most important commercial ark (Ref. 348). |
|
Not Evaluated (N.E.) Ref. 123251)
|
| harmless |
|
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