The Clubshell is wedge shaped and solid.  The shell is bright yellow to brown with bright green blotchy rays.  The inside of the shell is white.
    There is little known about their eating habits and reproduction, but they are probably similar to those of other freshwater mussels.   Freshwater mussels feed on organic particles, algae, and minute plants and animals, which they siphon out of the water.  During feeding respiration, females take in the sperm that has been released into the water by males.  The fertilized eggs remain in the gills until the larvae develop.  Then the larvae are released into the water, and  they attach and form cysts on the gills of a fish host.  The species of fish used by the clubshell is unknown.  After they develop a shell, they fall to the riverbed.

Reason for the species decline in population:

     The reason for the decrease in Clubshells is mainly because of impoundments, dredging the channels, and the impacts of silt from poor use of the land.  Pollution from cities, chemical plants, coal mines, and reservoir releases have also destroyed the mussels.  The Zebra mussels have also killed entire mussel beds.

Protection:

   To save the Clubshell, the State and Federal laws must be enforced.  Some of the habitats need to be restored.  Research is needed to determine the required habitat and the fish hosts.