The opaque pebblesnail, scientific name Somatogyrus tennesseensis, is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. The natural habitat of this species is rivers.
- Mollusc Specialist Group (2000). "Somatogyrus tennesseensis". The IUCN Red List of Threatened Species. IUCN. 2000: e.T20369A9192350. doi:10.2305/IUCN.UK.2000.RLTS.T20369A9192350.en. Retrieved 15 January 2018.
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