Salvelinus confluentus
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Bull_trout
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Bull trout populations have declined dramatically due to habitat fragmentation from dam construction, which blocks migration routes and alters water temperatures. Non-native trout species, particularly brook trout, hybridize with bull trout and compete for resources, leading to genetic pollution and displacement. Climate change exacerbates these pressures by warming water temperatures beyond the species' cold-water requirements and reducing snowpack that feeds their spawning streams.
Habitat
Bull trout inhabit cold, clean waters of mountain lakes, rivers, and streams across the Pacific Northwest, requiring water temperatures below 15°C for survival. They utilize both resident populations in headwater streams and migratory forms that move between spawning tributaries and larger river systems or lakes.
Other threatened species in SALMONIDAE
Threatened in Canada
Frequently asked questions
Why is Salvelinus confluentus classified as Vulnerable?
Where does Salvelinus confluentus live?
What are the main threats to Salvelinus confluentus?
Get weekly conservation intelligence
One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.
Free, no spam. One-click unsubscribe in every email.