[wunderflix]

From the Wikipedia article you referenced to:

> Fish ladders have a mixed record of effectiveness. They vary in effectiveness for different types of species, with one study showing that only three percent of American Shad make it through all the fish ladders on the way to their spawning ground

I guess that’s what they call artificial selection pressure.

[_lqaf]

If we're going the route of applying selection pressure to other species for human amusement, then we should just go straight to unicycles.

[dtgriscom]

... so, you think fish will need unicycles more than they do bicycles?

[wunderflix]

Are you aware that computers are a “bicycle for the mind”?