Unusual creatures are more appealing: What guppies teach us about evolution
Females prefer to mate with unusual males. At least, that’s the case among guppies, small fish from South American rivers. Since their fertilization is internal, the males display a wide array of colors to attract females. It might seem that the most fashionable males are the most successful… but it turns out to be quite the opposite. So, why would a female guppy choose the most unusual male in the group?
