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Current Status: Bull trout are currently listed throughout their range in the coterminous United States as a threatened species.

Bull trout are a cold-water fish of relatively pristine stream and lake habitat in the Pacific Northwest of the United States.  They are grouped with the char, within the salmonid family of fishes. They have the most specific habitat requirements, including the "Four C's": Cold, Clean, Complex, and Connected habitat.  Bull trout require the coldest water temperatures of any northwest salmonid; they require the cleanest stream substrates for spawning and rearing; they require complex habitats, including streams with riffles and deep pools, undercut banks and lots of large logs; and they need connection from main river, lake, and even ocean habitats to headwater streams for annual spawning and feeding migrations.

For more information including Biology, Status, and other related documents please go to ECOS.fws.gov.

Bull Trout from Timber Creek, Little Lost River, Idaho - Photo by Bart Gammett

Click here to contact the Region 1 Bull Trout Coordinator

Map of Bull Trout Core Areas