The Bonneville whitefish (Prosopium spilonotus) is a salmonid fish endemic to Bear Lake on the Utah-Idaho border. It is one of three species of Prosopium endemic to Bear Lake, the other two being the Bear Lake whitefish and the Bonneville cisco. The species is listed as a Wildlife Species of Concern by the Utah Division of Wildlife Resources. They spawn from mid February through early March, over rocky or sandy areas. The female will stop to spawn, with 5-6 males in attendance, the total process lasting 5 to 15 seconds before the fish rejoin their school.