Teslin Lake is a long, narrow body of water tucked into the Southern Lakes Region of Yukon, Canada — its Tlingit name, Dèsłìn yi, translates fittingly to "long narrow water." Surrounded by pristine wilderness and framed by the Alaska Highway along its northern half, the lake sits within the traditional territory of the Inland Tlingit people, who have fished and hunted these waters for generations. The lake is fed by several tributaries, most notably the Nisutlin River, and drains southward into the Teslin River, which eventually connects to the broader Yukon River system. Teslin Lake supports a remarkably diverse fish community for a Yukon lake, with 13 resident freshwater species documented, making it a standout destination for sport anglers in the territory. The lake's oligotrophic (low-nutrient) character means plankton densities are low, which in turn keeps forage fish populations relatively sparse — a dynamic that shapes the growth rates and behavior of the lake's top predators in meaningful ways for anglers to understand.