Diet: Omnivore Size: 2 inches Guppies are one of the most popular pet fish and are perfect for a 20-gallon aquarium. These distinctive little creatures come in many colors and tail shapes and are ...

To marine biologists, the guppy (scientific name Poecilia reticulata ... name at least one of its undersea boats for these little fish. Actually, in this lucky fish’s case, an entire class ...