Wired erklärt, wie man einen Fisch mit der Hand fängt. Es gibt Bilder von mir, auf denen ich am Flußufer des Rheins einen Fisch in der Hand halte und soweit ich mich erinnere, habe ich den damals tatsächlich mit der Hand gefangen, was selbstverständlich nicht reiner Zufall war, sondern pures Talent und Begabung. (Das mit dem Fisch stimmt, der Rest… naja…)
Remember this simple rule of thumb: if you can see the trout, he can see you, as physics dictates that light flows both ways. So keep a super low profile. Also, you'll have to approach from downstream. Because they're fighting a current to stay in one spot, trout spend 95 percent of their time facing upstream. Their side mounted eyes means that they can see behind themselves a bit, but for the most part, they're going to be focusing on the insects being swept downstream at them.
Once inside 30 feet, any motions in the fish's field of vision will likely send it scurrying to a deeper part of the river. So get low — crawl if you can — and step quietly.
Auch schön: Wie man den Fisch auf möglichst nette und zuvorkommende Art wieder frei lässt:
The fish will have gone through a bit of trauma and will need help getting oxygen (imagine if a fish just yanked you under water while you were eating a sandwich). So gently rock them forward and backward in the current to get the water moving through the gills. It shouldn't take too long but after a few massages in the current, that fish should zip out of your hands and back to the river bottom to think things over. He probably won't hang on that bank again for a while.