The Savannah pebblesnail, scientific name Somatogyrus tenax, is a species of freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae.

This species is endemic to the United States.

Somatogyrus tenax may actually be a junior synonym of Somatogyrus virginicus, although the taxonomy remains in dispute.

This Hydrobiidae-related article is a stub.

You can help Wikipedia by expanding it.