SAN FRANCISCO — Lions and tigers and bears and… guppies? Don't let its tiny size, delicate tail or fondness for aquarium life fool you; a new chemical analysis places the guppy high up on the food ...

A new study demonstrates a female preference for rare males using an experiment in a wild population, rather than a laboratory setting. When it comes to choosing a mate, female guppies don't care ...

The male guppies that were depicted in this sexual selection model only begin to demonstrate the vast range of colors and patterns expressed by wild guppies. Below are some examples of wild guppies, ...

Guppy fish are colorful, active, and incredibly easy to care for — making them one of the most popular freshwater fish for aquariums worldwide. Whether you’re a beginner setting up your first tank or ...