Biodiversity & Conservation

Banded venus - Clausinella fasciata

Clausinella fasciata

Image National Museum Wales - External view of Clausinella fasciata valve. Image width ca 2.5 cm.
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Distribution map

Clausinella fasciata recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)

Why do the maps differ?

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Clausinella fasciata is not listed under any importance categories.

Taxonomy icon Taxonomy Taxon English term
Phylum Mollusca Snails, slugs, mussels, cockles, clams & squid
Class Bivalvia Clams, cockles, mussels, oysters, and scallops
Authority (da Costa, 1778)
Recent synonyms Venus fasciata
Map icon Recorded Distribution in Britain and Ireland Common around all coasts of Britain and Ireland.
Habitat information icon Habitat information Found in coarse gravels, usually with sand or shell fragments, from the sublittoral down to depths of about 100 m.
Text page icon Description Clausinella fasciata is a solid, flat, sub-triangular shell growing up to 2.5 cm long. The outer surface colour is variable, red, pink, purple, yellow or brown but typically with radiating bands and streaks of colour on a paler background. There may be up to 15 broad concentric ridges in older individuals. The margin of the shell may be finely ridged (crenulate). The inner surfaces of the shell are dull white in colour.
Identifying features
  • A small, solid, compressed sub-triangular shell with prominent umbones.
  • Colour variable, white to yellow, brown, pink or purple, typically with bands or streaks of colour on a paler background.
  • Inner surface dull white or tinged purple.
  • Up to 15 broad, bold, concentric ridges with fine concentric striations between them.
  • Inner shell margin finely crenulate.
  • Pallial sinus small and U-shaped.
  • Three cardinal teeth in each valve.
Additional information icon Additional information Clausinella fasciata resembles the striped venus, Chamelea gallina, but Chamelea gallina has finer concentric ridges on the shell.

This review can be cited as follows:

Caroline Farrell 2008. Clausinella fasciata. Banded venus. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 25/11/2015]. Available from: <>