Bivalvia

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Common Name Fingernail Clam
Phylum Mollusca
Class Bivalvia
Order Veneroida
Family Sphaeriidae
Description 2-10mm long, rarely up to 20mm. The growth rings are very close together and hardly raised - the shell feels smooth when you run your fingernail across the lines. For more photos, refer to our online gallery: tinyurl.com/t22echa
Habitat Can be found on any substrate except bedrock and are the most dominant bivalves in ponds and deep areas of lakes. Can be found in all water velocities.
Feeding Information Feed in from one siphon and release waste and indigestibles through the other. Feed on small pieces of organic matter such as plankton and small pieces of leaves.
Water Quality Tolerance Slightly more tolerant of pollution than other clams. Found in both highly polluted and pristine water. Unlike mussels, they aren't restricted to areas with high concentrations of calcium carbonate.
References Voshell & Wright. 2002.