While plenty of anglers enjoy fishing for brookies, they are a threat to an iconic Idaho native, the bull trout, Bowersox said. Brook trout can outcompete and cross-breed with bull trout.

The invasive brook trout is out-competing with the native and threatened bull trout in the waterways of the Malheur National Forest. Now, new efforts are underway to eradicate the invasive fish ...

Brook trout have several traits — including earlier maturity that allows them to produce more eggs over time — that help them outcompete the bull trout. This decades-long protection strategy ...

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. If a body of ...