CR

Elimia troostiana

Declining

Overview

Elimia troostiana, the Mossy Elimia, is a species of freshwater snail with an operculum, aquatic gastropod mollusc in the family Pleuroceridae. This species is endemic to the Mossy Creek district of Jefferson County, Tennessee in the United States, for which it is named.

Elimia troostiana faces severe threats from habitat degradation and water quality deterioration in Tennessee's river systems. Dam construction and channelization have altered natural flow regimes critical for this freshwater snail's survival. Agricultural runoff and urban development have introduced pollutants and sedimentation that degrade the clean, well-oxygenated waters this species requires.

Threat summary

Habitat

Elimia troostiana inhabits clean, flowing freshwater streams and rivers in Tennessee, typically found on rocky substrates in well-oxygenated waters. This aquatic gastropod requires stable water conditions with minimal sedimentation and pollution.

Wetlands (inland)· major

Conservation measures underway

Species recovery