RBC I Whirling Disease first impacted Colorado’s rainbow trout in the mid-1990s and eliminated many wild populations of this popular sport fish. The aquatic tragedy sparked a decades-long effort by Colorado Parks and Wildlife research scientists to find a remedy and re-establish populations.
Since 2003, the researchers have been crossing a strain of rainbow trout resistant to the disease with other strains of rainbows in the hope of developing a trout that would fend off…