Sphaeriidae is a family of small to minute freshwater bivalve molluscs in the order Sphaeriida. In the US, they are commonly known as pea clamsorfingernail clams.[3][4]
| Sphaeriidae | |
|---|---|
| |
| Four shellsofSphaerium corneum. Scale bar is in mm. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Sphaeriida |
| Superfamily: | Sphaerioidea |
| Family: | Sphaeriidae Deshayes, 1855 (1820) |
| Genera | |
|
See text | |
| Synonyms | |
|
Cycladidae, Rafinesque 1820[1][2] | |
Genera:[5]
Sphaeriidae are hermaphrodites with internal fertilization. Developing young are incubated within their mother (ovoviviparity), and newborn clams look like miniature copies of the adults.[4]
Parasites and/or predators include the Sciomyzidae.[6]
