CR

Epioblasma othcaloogensis

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Southern Acornshell faces severe threats from dam construction and river channelization that have fragmented and degraded its riverine habitat throughout the Tennessee River system. Water quality degradation from agricultural runoff, urban development, and industrial pollution has further compromised the species' survival. The mussel's dependence on specific fish hosts for reproduction makes it particularly vulnerable to declining fish populations caused by habitat modification and pollution.

Threat summary

Habitat

The Southern Acornshell inhabits clean, flowing waters of medium to large rivers with stable gravel and sand substrates. It requires well-oxygenated water and is typically found in areas with moderate current flow in the Tennessee River drainage system.

Wetlands (inland) - Permanent rivers/streams· major

Conservation measures underway

Resource & habitat protectionHabitat & natural process restorationSpecies managementSpecies recoveryLinked enterprises & livelihood alternatives