High Quality Content by WIKIPEDIA articles! Yellowstone National Park is home to 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 the 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.