Biologists say fish in Sand Lake are safe from predatory bass after one was caught there in early September

In a release Friday, the Alaska Department of Fish and Game said the juvenile fish had been sent to the University of Alaska Fairbanks and genetic testing confirmed it was a largemouth bass, which are not native to Alaska.

Bass are aggressive predators and can wipe out entire other species, which had Fish and Game concerned about the health of the lake’s stock.

But after surveying the waters with different types of traps and nets, Fish and Game determined the rest of the lake is bass-free. The agency will continue monitoring for the next weeks and months to make sure it stays that way.

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