Yes. The inlet and outlet pipes at the rear end of the mussel body are exposed, and water can flow into and out of the mantle cavity, thereby completing functions such as ingestion, respiration, and excretion of feces and metabolites, filtering microorganisms and organic matter particles in the water, and eating small microorganisms. River mussels

River mussels are the collective name for a class of animals belonging to the Molluscidae family. In some places, they are called mussel shells or clams. They live at the bottom of freshwater lakes, rivers, etc., half-buried in the sand.

River mussel meat is edible and can also be used as bait for fish and poultry. In some areas, freshwater pearl clams are used to raise pearls. The main species used to raise pearls are the triangular sail clam and the ruffled crown clam.

River clams are the cradle of pearls. They can not only form natural pearls, but also artificially cultivate pearls. Pearls are a kind of precious ornaments.