The yellow lampmussel is a large freshwater mussel in the Unionidae family, commonly referred to as pearly mussels. Though an uncommon species, the yellow lampmussel has a large range throughout much of the Northeast U.S., from Maine to as far south as Georgia, as well as New Brunswick and Nova Scotia, Canada. They are typically found in flowing water of medium to large rivers, but the species has also been documented historically in ponds in the northern portions of its range. 

Like other freshwater mussels, the yellow lampmussel is at risk from habitat degradation in streams and the surrounding watershed, barriers to aquatic connectivity, contaminants, and diseases. The U.S. Fish and Wildlife Service is working with partners to support research, habitat restoration, propagation, and other actions that will help restore native freshwater mussel species.