Fishia yosemitae, the Dark Grey Fishia or Grey Fishia, is a moth in the Noctuidae family. It is found from central Alberta to Colorado in the Rocky Mountain and Great Plains regions. It is also found in eastern, central, and southern California, as well as in the Intermountain region. The habitat consists of dry open areas, including open ponderosa pine forests, juniper woodlands and sagebrush steppe at low to middle elevations. The larvae feed on various herbaceous plants, including plants in the families Asteraceae and Scrophulariaceae, as well as Eriogonum species.