Fitting squares into circles

One of the many reasons (although not the primary reason) I rarely nymphed when I lived back in Montana was avoiding the dreaded headshake of the native mountain whitefish. Whitefish don't eat dry flies and streamers...usually. There are always exceptions to the rule. Early fall is whitefish dry fly time. And sometimes whitefish eat streamers.

This aggressive, tiny mouthed whitefish followed my streamer downstream a good 10 feet before it did it's best to defy the laws of physics and geometry by fitting a square in the tiny tiny circle.