Description

Also known as a Cupcake, Fileclam, Oyster.

Found singly or in groups, wedged in crevices and holes, over coral and rocky reefs.
They feed on plankton.
Length - 4cm
Depth - 1-20m
Widespread Indo-West Pacific

Most Bivalves are permanently anchored in fissures or depressions in the rock surface of the reef, some may become covered in algae and other marine life.
Other Bivalves swim free, either by a well developed foot or propelled along by a jet of water from their mantle cavity. Ref: https://en.wikipedia.org/wiki/Lima_(bivalve)