👉 Plectrogenidae are a family of crustaceans that belong to the order Anoplategiformes, commonly known as the clams or oysters. They are characterized by their long, slender bodies and the presence of multiple pairs of legs, which are used for swimming and attachment to rocks. Plectrogenidae are important in marine ecosystems because they provide food for a variety of crustaceans and other animals that rely on them for shelter and feeding.