Fine-rayed pigtoe pearly mussel
 The fine-rayed pigtoe pearly mussel or fine-rayed pigtoe (Fusconaia cuneolus) is a species of bivalve in the Unionidae family. It is native to Tennessee Alabama and Virginia in the United States where its population has declined severely. It is a federally listed endangered species of the United States.Like other freshwater mussels this species reproduces by releasing its larvae or glochidia into the water where they make their way into the bodies of fish.