Hey, I've done that - many years ago when I didn't realize that the CA Fish and Game laws prohibited taking fish in manners other than hook and line, we were walking along a lake in the Siearra when I heard this wet "flop, flop" noise. Turns out this cutthroat trout (about 12") had swum up a little 1" deep rivulet that fed into the lake, eating tadpoles that were there, but beached himself when he tried to turn around in the shallow, narrow stream with his stomach all distended. I picked him up and had a brief moment of indecision: hmm, return him to the lake and let him have a long happy life and lots of little cutthroat descendants? or DINNER?

He was very tasty cooked with the wild onions we found growing nearby. But I suppose I should turn myself in for having caught him illegally.