Fishing closures are becoming routine as record heat warms rivers in the US West

Trout need cool water to survive, but record heat this summer has driven water temperatures to lethal levels for fish.Wildlife officials are banning fishing during certain hours on rivers and streams across the U.S. West, following an exceptionally dry winter and amid widespread drought. Lower water levels mean rivers can heat more rapidly.The restrictions aim to reduce stress on species including highly-prized trout. Anglers travel from around the world to find the fish in Yellowstone National Park or Western Montana’s Blackfoot River, featured in the movie “A River Runs Through It.”More record temperatures are forecast this weekend as a heat wave in the Southwest expands north into the Rocky Mountains and east across the High Plains.On the Yellowstone River near Livingston, Montana, Cali