Biologists check health of Lake Guntersville fish - WAFF-TV: News, Weather and Sports for Huntsville, AL

Biologists check health of Lake Guntersville fish

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Biologists with TVA were out at Lake Guntersville conducting an annual fish survey. Biologists with TVA were out at Lake Guntersville conducting an annual fish survey.
GUNTERSVILLE, AL (WAFF) -

Biologists for TVA were out on Lake Guntersville Wednesday for an annual survey.

The survey is a way for biologists to check on the health of the fish that live in the lake.

The fish are stunned so that biologists can examine them for diseases and parasites. They are then released back into the water.

TVA announced plans to resume their aquatic weed program which kills or cuts back aquatic weeds. Recreational boaters were pleased, but some bass fishermen were concerned. TVA Fisheries Biologist John Justice said he anticipated there would not be a negative impact on the fish population.

Justice said Lake Guntersville was still a top bass fishing lake for the many years the program was in existence prior to 2010. Justice said there needed to be a balance as too many weeds can present their own problems.

"At night there's the biological oxygen demand increases where the photosynthesis stops, and then the plants start respiring," said Justice. "Anytime you have any of the decay and things like that, that can cause problems with water quality or oxygen."

Justice also said another reason they do the fish surveys were so they can monitor the changes in the lakes.

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