Conventus conventus
Conventus conventus, the arctic-alpine pea clam, is a species of freshwater bivalve from the family Sphaeriidae.
Description
The small shell is oval in shape and thin and fragile. It is broad and flattened with flattened umbos near the midpoint. The colour is yellowish-white and the periostracum is silky with fine, concentric striation.Ecology
C. conventus is a relict of colder climatic periods found only in deep, cold, upland lakes.Distribution and conservation status
- Germany – endangered
- Poland – vulnerable
- Nordic countries: Faroes, Finland, Norway and Sweden
- Great Britain and Ireland