You've also placed a whole host of guppy predators in the test pool: 30 rivulus, 30 acara, and 30 cichlids. Cichlids, generally only found in the largest, deepest stretches of guppy streams ...

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 ...