How we detect Brown trout
Occurrence density
Where Brown trout has been recorded
Aggregated occurrence records across its known range.
The brown trout is a species of carnivorous ray-finned fish and the most widely distributed species of the salmonid genus Salmo, endemic to most of Europe, West Asia and parts of North Africa, and has been widely introduced globally as a game fish, even becoming one of the world's worst invasive species outside of its native range.