In conjunction with the National Park Service, the Kentucky Department of Fish and Wildlife Resources earlier this month stocked about 1,200 individual mussels into the Green River within Mammoth Cave National Park in southcentral Kentucky, in order to restore a federally-listed endangered species historically found in waters of the commonwealth.
The rayed bean, a species of freshwater mussel, has not been found in Kentucky waters in more than four decades. The mussels for this restoration effort were moved from the Allegheny River in Pennsylvania because of a tar spill.
https://www.murrayledger.com/news/state/endangered-mussels-released-in-kentucky-rivers/article_5d2ff2da-f6f4-11ea-8118-3f92b791d341.html