and Parks and the Confederated Salish and Kootenai Tribes. The lake is home to the semi-annual "Mack Days" Lake Trout fishing contest, which aims to reduce the non-native "Mackinaw trout" or lake trout (Salvelinus namaycush) populations, as well as educate people about the Flathead Lake Fisheries Management Plan. Like the majority of other nonnative species, they became established in the lake from the late 1800s-early 1900s. The introduction of lake trout has placed increased pressure on the ecologically similar threatened native bull trout (Salvelinus confluentus). Since the inception of this event in 2002, over 402,000 lake trout have been harvested. Native Cutthroat Trout Northern Pikeminnow Bull Trout Mountain Whitefish Westslope Cutthroat Trout Nonnative Brown Trout Lake Trout Golden Trout Yellowstone Cutthroat Trout Brook Trout Rainbow Trout Kokanee Salmon Northern Pike Yellow Perch Largemouth Bass Smallmouth Bass Sturgeon (sp) In addition to these commonly-pursued game fish, the lake is also home to other native species that currently are not actively managed by government fish and wildlife agencies, including the longnose sucker (Catostomus catostomus), redside shiner (Richardsonius balteatus), and slimy sculpin (Cottus cognatus). Panorama Notes References Alt, David. "The Making of Flathead Lake" in Profiles of Montana Geology: A layman's guide to the Treasure State. Butte, MT: Montana Bureau of Mines and Geology, 1984. External links Flathead Basin Commission Bodies of water of Lake County, Montana Geology of Montana Lakes of Flathead County, Montana Lakes of Montana Lakes of the Rocky Mountains