In a Nye County hot springs 90 miles west of Las Vegas, the tiny population of one of the world’s most endangered species has staged a comeback.The Devil’s Hole pupfish, found only in a cavern that gave the fish its name, has rebounded from 35 fish in 2013 to 115 this spring, according to a census conducted by the federal Fish and Wildlife Service.The one-inch fish is the subject of an aggressive preservation effort that includes using shag carpet to harvest eggs, which are then identified by microscope, incubated, hatched, and raised at a nearby lab.
