White Sturgeon can be located in the Frosted Heights biome, which can be unlocked by spending 10,000 Dreamlight. However, accessing this area on the map will require players to first unlock Forest ...
But the longevity of the sturgeon in the Kootenai River is waning: It hasn't reproduced in real numbers in at least 30 years due to habitat change caused by Libby Dam, which shut its gates in 1975.