See the faint horizontal line in the middle of the body? That's it! / Photo by Jasper Taback If you’ve ever spooked a trout and wondered how the hell it knew you were there, odds are it felt you.

A fly angler hooked into a trout amongst red salmon. / photo by Ken Baldwin Spring is close, so it's time to get your gear together and make sure it's all in working shape. Waiting until you're on the ...

If you’ve ever spooked a trout and wondered how the hell it knew you were there, odds are it felt you. Trout have a lateral line – a sensory system that runs along the sides of their body, allowing ...