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Tennessee Aquarium Reintroduction Biologist II Teresa Israel examines a critically endangered laurel dace before its reintroduction to the wild in March 2025. In July 2024, about 300 of these fish — considered by scientists to be among the most imperiled in North America — were rescued out of rapidly drying streams on Walden Ridge north of Chattanooga.  Tennessee Aquarium

Improving drought conditions on Cumberland Plateau enabled return of fish after 2024 rescue

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

CHATTANOOGA — After being saved from near-certain extinction last summer and overwintering in the expert care of biologists at the Tennessee Aquarium, more than 230 critically endangered laurel dace are finally back where they belong.

Last July, a prolonged regional drought caused many Southeast Tennessee streams to dwindle and, in some cases, dry up entirely. Atop Walden Ridge north of Chattanooga, water flow ceased at Bumbee Creek and Youngs Creek, the last sites known to support populations of Chrosomus saylori, the laurel dace.

When conditions in these rapidly disappearing waterways reached a tipping point, the Aquarium led a series of emergency rescue operations to save as many of these red-bellied, highlighter-yellow-finned minnows as possible. In coordination with the Tennessee Wildlife Resources Agency and with assistance from the U.S. Fish and Wildlife Service and the University of Georgia, about 300 laurel dace — the majority left on the planet — were relocated into the safety of human care at the Tennessee Aquarium in Chattanooga and Wolf Creek National Fish Hatchery in Jamestown, Kentucky.

According to the most recent report from the USDA’s U.S. Drought Monitor, much of Southeast Tennessee is still experiencing moderate drought conditions. However, a slightly wetter-than-average February made it safe to return these rescued minnows to the wild.