Pisidia (crustacean)

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Pisidia is a genus of marine porcelain crabs in the family Porcellanidae. They are small crustaceans living in the ocean. The genus was described by Leach in 1820.

Scientific classification:
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Malacostraca
- Order: Decapoda
- Suborder: Pleocyemata
- Infraorder: Anomura
- Family: Porcellanidae
- Genus: Pisidia

Synonyms include Streptochirus. A well-known species is Pisidia longicornis, the long-horn porcelain crab.