The Tracker No bull
3,000 Estimated 2009 native bull trout population in Flathead Lake, roughly one-tenth of the non-native lake trout population.
20,000 Estimated bull trout population in Flathead Lake in the 1950s.
299 Bull trout caught on Swan Lake in 2010 during an ongoing gillnetting project to control alien lake trout.
9 The number of Glacier National Park lakes where bull trout are functionally extinct due to alien trout, which have invaded three other lakes as well.
42.69 Weight, in pounds, of the record-setting mackinaw lake trout landed by Ruth Barber on Flathead Lake in June 2004.
Montana Headwall
Page 15 Summer 2011