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In 1977 the Tan Riffleshell was designated an endangered species throughout its entire range in
Kentucky, Tennessee, and Virginia. Tan Riffleshells inhabit sand and gravel river bottom and
are usually found in shallow water at the source of a river, stream, creek, or where shallow water
runs swiftly. The species' decline has resulted primarily from habitat and water quality
deterioration caused by pollution from mining, agriculture and construction activities. Because
the Tan Riffleshell is so limited in its distribution, anything that affects its water habitat
adversely could threaten its survival.
For more detailed information visit: www.ecos.fws.gov.
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