In Bighorn (Ram) Creek, in the Wigwam River drainage of British Columbia, the Threatened bull trout complete their 50-mile cross-border International spawning migration from Lake Koocanusa in the Kootenai River drainage in Montana. As many as five thousa. Subjects: Fishes; Threatened species. Location: Canada. . 1998 - 2011.

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Photo credit: © piemags/FWL / Alamy / Afripics
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Keywords: fishes, species, threatened