Physidae
| Physidae | |
|---|---|
| A live individual of Physella acuta from the Mediterranean area | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Gastropoda | 
| Subcohort: | Panpulmonata | 
| Superorder: | Hygrophila | 
| Superfamily: | Lymnaeoidea | 
| Family: | Physidae Fitzinger, 1833 | 
| Type genus | |
| Physa Draparnaud, 1801 | |
| Diversity | |
| About 80 freshwater species | |
Physidae, commonly called the bladder snails, is a family of small air-breathing freshwater snails, aquatic pulmonate gastropod molluscs in the superfamily Lymnaeoidea.