Fauna
Fish

Rio Grande Cutthroat Trout

Oncorhynchus virginalis

Also known as Rio Grande Trout, New Mexico Cutthroat Trout

Rio Grande cutthroat trout inhabit cold, high-elevation headwater streams throughout northern New Mexico and southern Colorado. Characterized by a brilliant red slash along the lower jaw and irregular spots concentrated near the tail, these native gamefish thrive in clean, well-oxygenated mountain waters. Males display intense reddish-orange coloration along their bellies during the spring spawning season.

FreshwaterNative TroutColdwater
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & preyMayflies, Caddisflies, Midges
Predators
  • Osprey
  • River Otter
  • Larger predatory fish
ThreatsHybridization, habitat loss, warming water temperatures
HabitatsCold, high-elevation mountain streams and headwaters
Life span5–8 years
  1. FamilySalmonidae
  2. SpeciesOncorhynchus virginalis
Range data is not available yet.
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
What to notice
Recognized by a yellowish-green body with dense tail spots and crimson slashes beneath the lower jaw.
Support conservation
Handle with wet hands, keep submerged in water, and use single barbless hooks when angling.
Responsible observation
  • Observation: Watch quietly from elevated stream banks to avoid spooking fish in clear water.
  • Angling Practices: Use barbless hooks and keep fish in the water to support native population recovery.
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