A new study conducted by the Environment Agency in Great Britain predicts that water temperatures across the British Isles will be too warm in the summer to support native brown trout by 2080, a dire warning for anglers and what’s hailed as the commonwealth’s favorite fish.

Successfully transitioning into the cold season usually means adapting your fly-fishing approach. This doesn’t require a complete overhaul of your gear and tactics, but every season presents a new set of variables. As the seasons change, trout water can seem like a labyrinth — one that is constantly morphing, often making it feel impossible to navigate. The path that worked yesterday suddenly closes, forcing you to take another route. But one of the things that makes fly fishing so exciting is how the same body of water is always changing.