California's native fish are at greater risk of extinction than experts previously thought.
A study by UC Davis scientists, released on Wednesday, predicts 65 percent of California's salmon and trout species may become extinct within a century.
The research was commissioned by the environmental group California Trout to call attention to the plight of 31 native salmon, steelhead and trout species in the state. Three researchers from the UC Davis Center for Watershed Sciences examined threats to the fish and estimated their likelihood for extinction.
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