The Long Sault Rapids on Manidoo Ziibi are a natural spawning environment for sturgeon and other species of freshwater fish.

Sturgeon are one of the most important factors for why people gathered at Kay-Nah-Chi-Wah-Nung. A single sturgeon, which has the potential to weigh over a hundred pounds and be over eighty years old, could feed numerous people. The 4000 gallon aquarium in the Visitors Centre features Lake Sturgeon that are caught and released back into Manidoo Ziibi on a seasonal basis.

Rainy River First Nations is also committed to the protection of Lake Sturgeon within the Treaty area, as well as the reintroduction and rehabilitation of sturgeon populations as far away as Alabama.