Physidae is a family of freshwater snails commonly known as bladder snails. They are characterized by their soft, elongated bodies and coiled shells, which can vary in shape and size. These snails are typically found in ponds, lakes, and slow-moving streams, where they play a role in the aquatic ecosystem by feeding on algae and decomposing organic matter. Bladder snails are known for their unique reproductive strategy, as they can reproduce both sexually and asexually. They possess a distinct ability to tolerate a range of environmental conditions, making them resilient in various habitats. Their presence can indicate water quality and ecosystem health.