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Fishes of Yellowstone National Park
The fish of Yellowstone National Park, in Idaho, Montana and Wyoming (U.S.), include 13 native fish species and six introduced or non-native species. Angling for trout has been a pastime in the park since its creation and trout species dominate the fish inhabiting the park. When Yellowstone National Park was created in 1872, 40% of the park's waters were barren of fish, including most alpine lakes and rivers above major waterfalls. Only 17 of 150 lakes held fish.
In 1889 the U.S. Bureau of Fisheries began a 60-year program of stocking and hatchery operations that significantly altered the ranges of native and non-native species within the park. By 1955, all stocking and hatchery operations in the park had been stopped. Several introduced species never established viable populations, and at least one introduced species was successfully eradicated from the park.〔
==Native species==
The following fish are native to the park, although their original ranges may have been severely reduced since the park's establishment or they may have been introduced into waters outside their original range, especially into alpine lakes. Native species are completely protected in the park and may not be harvested by anglers.〔(【引用サイトリンク】title=2013 Yellowstone National Park Fishing Regulations )〕
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