Potamilus capax

Potamilus capax
Conservation status
Vulnerable  (IUCN 3.1)
CITES Appendix I (CITES)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Genus:	Potamilus
Species:	P. capax
Binomial name
Potamilus capax (Green, 1832)

Potamilus capax, the fat pocketbook pearly mussel or fat pocketbook, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.

Range

Although this species was once very widespread, most of the decline documented in the range of the species occurred historically; this species was historically widespread in the Mississippi River drainage in Minnesota, Wisconsin, Iowa, Illinois, Indiana, Missouri, Kentucky, and Arkansas. Populations are believed to be extirpated from the Upper Mississippi as well as significantly reduced in the St. Francis and Ohio River drainages but populations have since expanded in the latter two rivers as well as found in the Lower Mississippi River. Populations are extant in Illinois, Indiana, Kentucky, Arkansas, Mississippi, and the borders of Missouri and Louisiana.

References

• Fish and Wildlife Service [1]
• EPA: Pesticides Endangered Species Protection Program [2]