The Limidae Family includes 215 species comprising 10 genus (Limatula (78 species), Limaria (35), Acesta (29), Lima (25), Limea (22), Ctenoides (15), ...)

Phylum      : Mollusca
 Class       : ⤷Bivalvia 
  Subclass    : ⤷Autobranchia 
   Infraclass  : ⤷Pteriomorphia 
    Order       : ⤷Limida 
     Superfamily : ⤷Limoidea 
      Family      : ⤷Limidae

Common name : file clams

Aspect : thin, fragile, and strongly ribbed; inequivalve (one valve more convex), inequilateral, obliquely oval or subquadrate; often gaping at margins; most size between 3 to 10 cm (Acesta excavata can reach >30 cm); radial rough ribs (often scaly or fringed); toothless hinge or with weak teeth;

Feeding : filtration of microorganisms in suspension (phytoplankton, zooplankton, detritus, and organic particles)

Environment : byssally attached to hard substrates (rocks, corals, sponges, shipwrecks) or nestled in crevices; common depth from 10 to 500 m