A new report led by the United States Geological Survey finds that 40 percent of all North American fish face extinction. The research was published in the journal Fisheries.
The report lists 700 species as imperiled, this is a 92 percent increase since the previous 1989 report that listed 364 species as imperiled.
The USGS has a very useful interactive map of all of the imperiled fish species that can be viewed by ecoregions or by political boundaries.
USGS and the American Fisheries Society interactive map
ENS Story: North American Freshwater Fishes Fading into Extinction