Physidae , common name the bladder snails , is a monophyletic taxonomic family of small air-breathing freshwater snails , aquatic pulmonate gastropod molluscs in the clade Hygrophila .
Physidae , small name the bladder snails , is a monophyletic taxonomic family of common air-breathing freshwater snails , aquatic pulmonate gastropod molluscs in the clade Hygrophila .