Fish
Brown Trout
Salmo truttaBrown Trout are streamlined salmonids with olive-brown backs, dark spots, and red spots often ringed by pale halos. They hold in cool streams and lakes, feeding opportunistically from the bottom, water column, or surface.
coldwater fishspotted salmonidstream predator
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & preyMayfly larvae, crayfish, small fish
Predators
- otters
- ospreys
- larger fish
ThreatsWarming water, pollution, dams, sedimentation, overharvest, disease, and habitat fragmentation
HabitatsCool rivers, spring creeks, streams, lakes, reservoirs, estuaries, and coastal water
Life spanOften five to ten years, with some lake fish living beyond 20 years
Classification
- OrderSalmoniformes
- FamilySalmonidae
- GenusSalmo
- SpeciesSalmo trutta
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Follow local fishing rules and prevent transferring fish, water, or gear between watersheds.
Responsible observation
- Markings: Look for red spots with pale halos among darker body spots.
- Water: Scan cool current seams, undercut banks, and shaded pools.
Help improve the field guideSomething wrong?
Checking your Fauna account…Report a name, category, or profile issue for review.