Yellowstone Cutthroat Trout
Yellowstone Cutthroat Trout connect lake, river, tributary, bear, bird, and human food webs.
Artwork inspired by Carl Rungius
Yellowstone Cutthroat Trout are native to the Yellowstone, Snake, and Fall River drainages and occupy everything from small headwater streams to large rivers and lakes. A red-orange slash beneath the jaw and heavier spotting toward the tail are useful field marks, but neither proves genetic purity; rainbow-trout hybridization can make even a clear photograph ambiguous.
Their ecological reach is unusually visible. Cutthroat migrate into shallow tributaries from late April through mid-July, carrying food within reach of ospreys, pelicans, otters, bears, and other predators. Nonnative lake trout remain deep and spawn within Yellowstone Lake, so their predation on cutthroat interrupted a food pathway that had connected the lake to land for thousands of years.
Watch spawning fish from bridges or stable banks and never step on clean gravel nests, or redds. Anglers must carry the current rules for the exact water: Yellowstone requires immediate release of native fish, while regulations for nonnative trout vary by conservation zone. Use clean gear, wet hands before any required handling, and never move live fish or water between drainages.
- Native core
- Yellowstone drainage
- Spawning
- Spring to early summer
- Threats
- Nonnatives and hybridization
Quick guide
- First decision
- A golden-to-olive trout with black spotting concentrated toward the tail and orange-red slashes beneath the lower jaw
- Context check
- cold rivers, tributaries, and lakes of the Yellowstone drainage and connected restored waters; context: cold rivers, tributaries, and lakes of the Yellowstone drainage and connected restored waters
Recognize responsibly
- Establish the whole form
- Begin with A golden-to-olive trout with black spotting concentrated toward the tail and orange-red slashes beneath the lower jaw.
- Separate the nearest alternative
- Confirm cold rivers, tributaries, and lakes of the Yellowstone drainage and connected restored waters before settling on the identification.
- Add ecological context
- Cold rivers, tributaries, and lakes of the Yellowstone drainage and connected restored waters; late spring through autumn for observation.
- Leave the evidence intact
- Do not reposition, collect, bait, pursue, or clear vegetation around Yellowstone Cutthroat Trout.
Good to know
The strongest Yellowstone Cutthroat Trout record preserves the distinction between “A golden-to-olive trout with black spotting concentrated toward the tail and orange-red slashes beneath the lower jaw” and “cold rivers, tributaries, and lakes of the Yellowstone drainage and connected restored waters” while also showing the surrounding habitat.
Notice these
- A golden-to-olive trout with black spotting concentrated toward the tail and orange-red slashes beneath the lower jaw
- cold rivers, tributaries, and lakes of the Yellowstone drainage and connected restored waters
- Feeds whenever water temperature and insects allow; spawning adults enter tributaries during spring and early summer.