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Tiny fish swim out of a plastic bag aand into a stream
Information icon Barrens topminnows being released into Short Springs. Photo, Erin Johnson, USFWS.

Barrens topminnows released into Short Springs

This spring, 67 Barrens topminnows were released into Short Springs located near Tullahoma, Tennessee. These Barrens topminnows were spawned at Conservation Fisheries Inc. (CFI). The Tennessee Aquarium and CFI provide Wolf Creek National Fish Hatchery with the topminnows when they reach about 10-12 millimeters in length for grow-out. Cultured fish are released at about 25 millimeters, and Wolf Creek typically makes one or two releases during the year.

The program is coordinated with the Cookeville, Tennessee, Ecological Services Field Office.

Tiny minnow-like fish acclimating to the stream temperature by placing the plastic bag in which they were transported into the stream.
Barrens topminnows being acclimating to the stream. Photo, Erin Johnson, USFWS.

As with many other species, spring is spawning season for the topminnows, and releases are normally in the spring in order to optimize spawning potential. Before the topminnows were released into Short Springs they were acclimated to the temperature of the Springs before they were released. This helps to prevent shocks to the fish because the temperature in the bag could be different from the water temperature in the Springs.


Erin Johnson, fish biologist, (570) 726-4247 x 158

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