In a dark, damp corner of a University of Wisconsin-Madison laboratory, Jenny Boughman dropped a 3-inch, three-spined female fish into a fish tank, and waited.
She sat perfectly still as she watched a male fish swim out slowly from its nest, beneath a cracked flower pot.
At first, the male didnâ??t notice the female among the strips of floating green, plastic table cloth that Boughman had ripped up to mimic a seaweed-like plant.
Then he spotted her. He zigged left and zagged right â?? the fish equivalent of strutting his stuff.