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 ...

Summary and Key Points: The Greater Underwater Propulsion Power Program (GUPPY) was launched by the U.S. Navy after World War II to enhance submarine speed, maneuverability, and endurance.

To marine biologists, the guppy (scientific name Poecilia reticulata), AKA the rainbow fish or the millionfish, is one of the world’s most popular tropical fish and one of the most widely ...