Theora opalina   (Hinds)  (Clam)
Organism information awaits expert curation
Class: Bivalvia
Order:Euheterodonta incertae sedis

Image copyrights: Government of India

Size: Length 4.25-15.75 mm; width 2.36-8.92 mm; height 1.1-3.2 mm

Color: Creamy white

Shell thin, fragile. Umbo acuminate and anterior in position. Anterior dorsal straight and gradually sloped. Posterior dorsal straight. Ventral margin convex. Sculpture smooth or with fine concentric striae. Muscle scars well impressed.

Synonym (s)
Neaera opalina Hinds 1843
Theora opalina Preston 1914

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• West Bengal, Sundarbans INDIA
• West Bengal, North and South 24 Parganas INDIA (Record: 1992)
• Kerala INDIA (Record: 1992)
• Maharashtra INDIA (Record: 1992)
• Tamil Nadu INDIA (Record: 1992)
• West Bengal, Matla River INDIA (Record: 00/12/1916)
• West Bengal, Kakdwip, Ghiapata INDIA (Record: 17/04/1980)
• West Bengal, Chhota Mullakhali INDIA (Record: 12/09/1984)
• West Bengal, Kakdwip INDIA (Record: 10/03/1985)

Literature Source(s)
  • (2002) Some invertebrate species recorded in Indian Sunderbans West Bengal Biodiversity Strategy and Action Plan(BSAP), Oct 2002
  • (1995) Hugali Matla estuary: West Bengal ZSI, Kolkatta 1-542
  • Balasubramanian, T Lagoons of India Environmental Information System Centre, Envis Publication Series: 3/2001 105 pp Available at -
  • Mandal, AK and Nandi, NC (1989) Fauna of Sundarban mangrove ecosystem, West Bengal, India Fauna of Conservations 3 35431 Available at - NIO, Goa
  • Subba Rao, NV; Dey, A and Barua, S (1992) Estuarine and marine molluscs Fauna of West Bengal Part 9 (State fauna series 3) ZSI, Calcutta 129-268 Available at - NIO, Goa

Page last updated on:2009-05-28

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