Displaying items by tag: tennessee lake sturgeon

A young lake sturgeon is viewed through a photographic aquarium after arriving at the Tennessee Aquarium Conservation Institute.  Tennessee Aquarium

Tennessee Aquarium welcomes 2,500 baby lake sturgeon as restoration effort turns 25 years old

Casey Phillips is a communications specialist at the Tennessee Aquarium in Chattanooga.

CHATTANOOGA — The approach of summer coincided with the arrival of thousands of juvenile lake sturgeon in the Tennessee Aquarium Conservation Institute. 

Biologists at the Aquarium’s freshwater field station welcomed 2,500, 2-inch babies into their care. After a steady diet of bloodworms and brine shrimp, bringing the fish to at least 6 inches, they will be reintroduced into the Tennessee River.

These tiny fish hold tremendous promise. Adult lake sturgeon may reach lengths of 8 feet and live 150 years. 

“They start out really small, so it’s shocking to think how big they can get,” says reintroduction biologist Sarah Kate Bailey. “The first year of life is when they grow the quickest. 

“They grow so fast while we have them here. You’ll go home for the day, come in the next morning, and they look like they’ve grown overnight.” 

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WBIR: Holston River sturgeon surging

The population of lake sturgeon, a survivor since the Cretaceous Era that barely escaped the ravages of modern dams and reservoirs, is on the upswing in the Holston River and other branches and tributaries of the Tennessee River system. The last record of the fish in the valley before restoration efforts began is about 1960, according to WBIR.

Significantly older fish were identified during a recent inventory of sturgeon, giving hope that some fish were closing in on reproductive maturity. The gradual recovery is largely the result of Tennessee Wildlife Resources Agency and Tennessee Valley Authority restoration efforts, WBIR reports.

“It makes our valley richer; that fish is supposed to be here,” one researcher told WBIR about the significance of the so-far successful restoration of native sturgeon habitats.