Iconic Fishes Face New Threat

They're not spectacular like marlins, but trout are among the most legendary—think A River Runs Through It—and lucrative fish of mountain rivers and lakes. Across the western United States alone, trout fishing generates hundreds of millions of dollars annually. But trout habitat will likely be cut in half by 2080 due to warming rivers and altered patterns of flooding, according to a large study published today. "It's fairly shocking to us, as biologists," says co-author Kurt Fausch of Colorado State University, Fort Collins.