Fish Slough is a 36,000-acre Area of Critical Environmental Concern (ACEC) located about five miles north of Bishop on the Volcanic Tablelands. It sits at the ecological transition zone between the Mojave Desert and Great Basin biomes and contains one of the richest wetland ecosystems in the region — an oasis of springs, alkali meadows, and riparian habitat in an otherwise arid landscape. The area is the last natural habitat of the endangered Owens Pupfish, a small desert fish that has persisted in the valley since the ice ages. It also supports rare endemic plants including the Fish Slough milk-vetch, which exists nowhere else in the world. Raptors, hummingbirds, migratory songbirds, and waterfowl are commonly seen throughout the year. Several petroglyph sites, including the Fish Slough panel, are found along Fish Slough Road. The area is managed by BLM, LADWP, the UC Natural Reserve System, and US Fish & Wildlife Service under a cooperative management plan. Access is via Five Bridges Road off Highway 6.