The Huck Institutes of the Life Sciences

Few hatchery brook trout genes present in Pa. watershed wild fish

Researchers electrofishing the bottom of a pool on Loyalsock Creek in northcentral Pennsylvania. They were searching for wild brook trout in a study that included researchers genotyping about 2,000 fish. The research was the first to look at genetic introgression on wild brook trout in an actively stocked watershed.
https://news.psu.edu/story/537280/2018/09/18/research/few-hatchery-brook-trout-genes-present-pa-watershed-wild-fish