The Cahaba River (IMAGE) University of Alabama in Tuscaloosa Caption The Cahaba River, shown here near the Bibb County, Ala. rediscovery site, is home to 121 species of fish, 38 species of mussels and 32 species of snails. A freshwater snail declared extinct in 2000 was recently rediscovered in the river by a University of Alabama graduate student. Credit Paul Johnson, ADCNR Usage Restrictions This image and caption is embargoed until Aug. 8 at 5 p.m. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.