Pure greenback cutthroat trout confirmed in remote Colorado stream

A study unraveling the genetics of Colorado’s state fish, the greenback cutthroat trout, has found that pure greenbacks exist only on a 4-mile stretch of a creek southwest of Colorado Springs.

This overhaul of what is defined as a greenback cutthroat may come as a blow to anglers who fished such high-country sweet spots as Rocky Mountain National Park and thought they caught the real thing.

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