Prosopium is a genus of freshwater whitefishes found in North America and parts of eastern Russia. It contains three fairly widespread species: the round whitefish, the pygmy whitefish, and the mountain whitefish. The remaining species, the Bonneville cisco, the Bonneville whitefish, and the Bear Lake whitefish are endemic to Bear Lake.
| Prosopium Temporal range: | |
|---|---|
 | |
| Prosopium cylindraceum | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Salmoniformes |
| Family: | Salmonidae |
| Subfamily: | Coregoninae |
| Genus: | Prosopium D. S. Jordan, 1878 |
| Type species | |
| Coregonus cylindraceus Pennant, 1784 | |
Species
There are currently six recognized species in this genus:[2]
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
| Prosopium abyssicola (Snyder, 1919) | Bear Lake whitefish | Bear Lake on the Utah-Idaho border | |
| Prosopium coulterii (C. H. Eigenmann & R. S. Eigenmann, 1892) | Pygmy whitefish | mountain streams and lakes in western North America, it also has isolated populations in Lake Superior and in Ekityki Lake, Chukchi Peninsula. | |
| Prosopium cylindraceum (Pennant, 1784) | Round whitefish | Alaska to New England, including the Great Lakes | |
| Prosopium gemmifer (Snyder, 1919) | Bonneville cisco | Bear Lake on the Utah-Idaho border | |
| Prosopium spilonotus (Snyder, 1919) | Bonneville whitefish | Bear Lake on the Utah-Idaho border. | |
 | Prosopium williamsoni (Girard, 1856) | Mountain whitefish | Mackenzie River drainage in Northwest Territories, Canada south through western Canada and the northwestern USA in the Pacific, Hudson Bay and upper Missouri River basins to the Truckee River drainage in Nevada and Sevier River drainage in Utah |
References
- "Prosopium". Integrated Taxonomic Information System. Retrieved 6 June 2006.
- Molly Hallock and Paul E. Mongillo, Washington Department of Fish and Wildlife "Washington State Status Report" (1998).