Ugly Friend Theory

A Pair of Goleta Darts (shown above)

Drab Guppies Find a Way to Score
Probability Theory and guppy behavior predict that (about) four out of five females would agree which of the two Goleta darts was the best looking guy and which was his ugly friend. "Drab male guppies have hit upon a mating strategy that could be easily adapted to the bar scene: Home in on the female besieged by ugly males ventolin evohaler. In lab-raised descendents of wild guppies (Poecilia reticulata) females prefer mates with large orange body spots (image). But a new study suggests that less-colorful male guppies (inset) aren't totally at the mercy of picky females."