Sphaeriidae
| Sphaeriidae | |
|---|---|
 |
|
| Four shells of Sphaerium corneum. Scale bar is in mm | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Subclass: | Heterodonta |
| Order: | Veneroida |
| Suborder: | Sphaeriacea |
| Family: |
Sphaeriidae Deshayes, 1855 (1820) |
| Synonyms | |
|
Cycladidae, Rafinesque 1820 |
|
Cycladidae, Rafinesque 1820
The Sphaeriidae are a family of small to minute freshwater bivalve molluscs, in the order Veneroida; this family also includes the clams formerly placed in the Pisidiidae. In the US, they are commonly known as pea clams or fingernail clams.
Genera in the family Sphaeriidae include:
Sphaeriidae are hermaphrodites with internal fertilization. Developing young are incubated within their mother (ovoviviparity), and newborn clams look like miniature copies of the adults.
Parasites and/or predators include the Sciomyzidae.
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