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Phylum Mollusca > Class Bivalvia
File clams
Family Limidae
updated Aug 12
Where seen? These clams are sometimes seen our Southern shores, near reefs.

What are file clams? File clams are bivalves that belong to Family Limidae.

Features: 4- 6cm. Long, fleshy tentacles fringe the mantle which are sticky and detach easily when touched. Some species are attached to a hard surface by byssus threads, or building a nest lined with mingled byssal threads.

Like scallops (Family Pectinidae), some file clam species can also 'swim'. They clap their shells together using a strong adductor muscle, creating directed jets of water that emerge from either side of the hinge and propels them in the opposite direction. To distract the disturber, the clam may shed wriggling tentacles. Unlike scallops, file clams can move using their tentacles to 'row' with the shell in a vertical position.

What do they eat? Like many other bivalves, file clams are filter feeders. They use their siphons to suck in water and filter out microscopic food. The water also brings fresh oxygen to the animal.

Family Limidae recorded for Singapore
from Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The Molluscs of Singapore.
*in red are those listed among the threatened animals of Singapore from Ng, P. K. L. & Y. C. Wee, 1994. The Singapore Red Data Book: Threatened Plants and Animals of Singapore.

  Family Limidae
 

Lima vulgaris (Common file clam) = Lima lima
Lima sowerbyi

Limaria sp. (Swimming file clam)
Limaria fragilis
Limaria orientalis

Limatula bullata


Links
  • Family Limidae on The Gladys Archerd Shell Collection at Washington State University Tri-Cities Natural History Museum website: brief description and photos.
  • Fragile File shell (Lima fragilis) on the Northwestern Hawaiian Islands Multi-Agency Education Project: brief description and photo
  • File shells (Lima lima) Tan, Leo W. H. & Ng, Peter K. L., 1988. A Guide to Seashore Life. The Singapore Science Centre, Singapore. 160 pp.
  • Family Limidae in the Bivalves section by J.M. Poutiers in the FAO Species Identification Guide for Fishery Purposes: The Living Marine Resources of the Western Central Pacific Volume 1: Seaweeds, corals, bivalves and gastropods on the Food and Agriculture Organization of the United Nations (FAO) website.
References
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