Fish Species in Yellowstone National Park
- Cutthroat Trout: Native subspecies (Yellowstone, Snake River) adapted to cold, clear waters.
- Rainbow Trout: Introduced popular sport fish; colorful, acrobatic, in rivers/streams.
- Arctic Grayling: Unique, iconic; distinctive dorsal fin; in cool, clear waters like Yellowstone River.
- Mountain Whitefish: Native cold-water fish; prefer clear streams with gravel/rocky bottoms.
- Bull Trout: Native threatened species; needs clean, cold water; large rivers/lakes for spawning.
- Lake Trout: Introduced to Yellowstone Lake early 1900s; large sport fish up to 40+ inches.
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