Episode 4 - Fish Detective: In Search of the Pygmy Whitefish

Fisheries biologist and “Fish Detective” Sam Bourret is on a search for a glacial relic, the pygmy whitefish, in lakes ranging from Glacier National Park and the Bob Marshall Wilderness. He has recently discovered the diminutive fish in Tally Lake, and in Big Salmon Lake deep in the Bob Marshall. This ancient, deep-water critter is an important link in the lakes’ food chain and an indicator of healthy water quality.