Subclass Heterodonta Suborder Sphaeriacea Rank Species | Order Veneroida Higher classification Pisidium | |
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Similar Pisidium, Molluscs, Bivalvia, Pisidium casertanum, Sphaeriidae | ||
Pisidium amnicum is a species of very small freshwater clam. It is sometimes known as the greater European peaclam River pea shell.It is an aquatic bivalve in the family Sphaeriidae.
Contents
Description
Although only 9 mm (range 7-11 mm.) in length, this species is considerably larger than most Pisidium species, and has a fairly thick, concentrically ridged shell.This is glossy and triangular oval in shape. The shell is solid, and has broad but not prominent umbos often coated with a dull ferruginous deposit.The colour is grey-white to brown often with a greenish cast.
Distribution
Its native distribution is Palearctic. The species has been introduced to northeastern North America.
Ecology
In Europe it requires high levels of calcium and clean water.
References
Pisidium amnicum Wikipedia(Text) CC BY-SA