Pyramid and Walker Lakes have been restocked with fish captured in Summit Lake (Nevada) and Lake Heenan, and those populations are maintained by fish hatcheries. Unfortunately, the Summit Lake strain does not live as long or grow as large as the original strain of fish. However, in the 1970s, fish believed to have been stocked almost a century ago from the Pyramid Lake strain were discovered in a small stream along the Pilot Peak area of western Utah border, and are a genetic match to the original strain. This Pilot Peak strain is now integral to the reintroduction and planting programs maintained by the U.S. Fish and Wildlife Service.