The presence of brook trout says a lot about the condition of a lake, river, or stream. Brook trout are sensitive fish that can only spawn, grow, and survive in clean, cold water.

The second season of poisoning brook trout in a tributary to one of Yellowstone National Park’s most-prized cutthroat trout fisheries appears to have eliminated the nonnative fish.

Brook trout swim in the Presumpscot River in 2021 after being released by Gov. Janet Mills and representatives of the Department of Inland Fisheries and Wildlife. Derek Davis/Staff Photographer.

Thousands of anglers visit the coldwater streams of the upper Delaware River watershed each year to catch native brook trout. However, trout populations have been impacted by land use, habitat loss ...

The Deerfield River used to be a brook trout fishery when I was younger, but as I grew older, I started to notice that I wasn’t catching as many brook trout as I used to. They were being ...

CPW said that in 2010, a fish survey in the headwaters of the Williams Fork River revealed an "alarming" number of non-native brook trout. It's not known when brook trout invaded those waters, but ...