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This juvenile lake sturgeon was one of 50 released into the Tennessee River from Chattanooga’s Coolidge Park on May 2. The lineage of the fish can be traced millions of years, but overfishing, dams and habitat destruction has led to widespread population declines throughout its natural range.  Doug Strickland/Tennessee Aquarium

Lake sturgeon recovery links rivers and experts in Tennessee and Wisconsin 

Doug Strickland is a writer for the Tennessee Aquarium in Chattanooga.

CHATTANOOGA — Just across from the iconic peaks of the Tennessee Aquarium on the shore of the Tennessee River, a group of scientists with the Tennessee Aquarium Conservation Institute gathered on an early May morning to restore a primordial fish to the state’s primary waterway.

One by one, they carefully navigated down a boat ramp at Coolidge Park before gently releasing juvenile lake sturgeon, each just under a foot in length, into the river’s shallows.

These 50 sturgeon were the final youngsters to be reintroduced from a class of hundreds of sturgeon fry that arrived at the Conservation Institute’s freshwater field station last summer. Their introduction to the Tennessee River represented the latest milestone of a decades-long conservation effort to restore this state-endangered fish.

Despite reclaiming their one-time home in the waters of the Volunteer State, these newfound Tennesseans began life some 850 miles north of Chattanooga.