Includes the Snake and Lewis rivers and tributaries; Heart Lake; Lewis and Shoshone lakes; Falls and Bechler rivers and tributaries.
Heart Lake opens July 1.
Native Trout Conservation Area
Nonnative Trout Tolerance Area
Fish & Aquatic Species
Native fish underpin natural food webs and have great local economic significance.
Fisheries & Aquatic Sciences Program
Explore the National Park Service science program for fish and aquatic species.
Clean, Drain & Dry
Prevent damaging aquatic invasive species from reaching Yellowstone.
Last updated: June 19, 2019