Ever since non-native lake trout were introduced to the 132-square-mile lake, they’ve feasted on native cutthroat trout, dramatically decreasing their populations. As a side effect, other wild park inhabitants that feed on cutthroat, such as grizzly bears, have been affected. To boost cutthroat populations, park managers began several programs to reduce lake trout numbers, including netting and electroshocking the fish, which commenced in 2012. In total, approximately 1.2 million lake trout have been pulled from the lake in the past four years. Though effective, the efforts carry about a $2 million price tag, which is largely paid for by the federal government and private donations.