👉 Pyramidopidae are a group of small, flat-bodied, aquatic animals that primarily live in freshwater habitats, including rivers and lakes, where they spend their lives as planktonic larvae or juvenile stage. These animals are characterized by their highly specialized digestive system, which includes the presence of a peristome, a small tube-like structure that serves as a filtration device, allowing them to extract nutrients from water rather than digested food. Pyramidopidae are known for their ability to
