Lexi Krupp reports on efforts to restore arctic grayling populations in Michigan In a dim, out-of-the-way corner of the state fish hatchery in Marquette are a few thousand skinny, grey fish, each no more than nine inches long. “They are skittish,” says Jim Aho, who runs the facility for the Department of Natural Resources. “Movement above them definitely puts stress on them, so they’re in a dark, quiet few tanks here.” They’re arctic grayling, known as nmégos in Ojibwe— a species that was once dominant in rivers and streams in northern Michigan, before they were wiped out from the state over a century ago.