Endangered Species Details 

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Name:Fat Pocketbook
Species:Potamilus capax
Federal Listing:Endangered; June 14, 1976

The fat pocketbook lives in the St. Francis River drainage in areas ranging from small ditches to the main channel at the river's lower end. Its range includes portions of Arkansas, Illinois, Indiana, Kentucky and Missouri.

The greatest impact on this mussel's habitat has been from activities related to navigation and flood control. Channel maintenance dredging has been particularly destructive of its habitat. Siltation and pollution also have adverse effects