Bull Trout

From U.S. Fish and Wildlife Service, Mountain-Prairie Region:

Each summer, threatened adult bull trout migrate from the main stem of the St. Mary River to ascend Boulder Creek in search of pristine spawning habitats in Northwestern Montana. Boulder Creek appears to be the primary spawning tributary for this unique population in the St Mary River Drainage; the only native population of Bull Trout east of the continental divide. In fact, Bull Trout redd surveys conducted by Montana FWCO biologists this past October identified 68 redds (spawning sites) - the highest recorded number since surveys were initiated by our office in 1997.

Photo Credit: Jim Mogen / #USFWS