The guppy (Poecilia reticulata ... Male guppies have amazing color patterns, and many breeds have really fancy fins, too. Female guppies might not be as boldly marked as the boys, but they ...

We've seen in our simulations that the more brightly colored a male guppy is, the more likely he will be seen -- and eaten -- by a predator. In a simulation or in the wild, where predators are ...