Bull Trout, Imnaha SMU

Bull Trout
Photo Credit: Terry Smith, U. S. Forest Service


  • Species Common Name Bull Trout
  • Species Scientific Name Salvelinus confluentus
  • Federal Listing Status Threatened
  • State Listing Status Sensitive
  • SMU/ESU/DPS/Subspecies Imnaha SMU


Special needs

Requires cool temperatures for spawning and rearing. Requires channel complexity and available migratory corridors.

Limiting factors

Non-native fish. Dams. Diversions. Effect of weirs. Habitat (riparian and temperature barriers).

Conservation actions

Habitat restoration. Restore connectivity. Manage against brook trout.