Kevin Duffy, a fisheries technician for dam owner Avista, uses a radio antenna to track tagged bull trout in a stream that feeds into Noxon Reservoir. Biologists track a handful of tagged fish daily to try and learn about their migratory movements, which. Subjects: Fishes; Threatened species. Location: Canada.

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Size: 2741px × 1824px
Photo credit: © piemags/FWL / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: myngmedit, sartoreweb