genetic brook trout -- 003

genetic brook trout -- 003

wild vs. hatchery trout

The difference between a wild brook trout (top) and a hatchery-raised brook trout is striking, and the wild fish have evolved to survive in harsh, small-stream environments. Despite many decades of stocking by the state, in this one watershed at least, wild fish had very few genes from hatchery trout.

IMAGE: Shannon White / Penn State