It says the guppy is a member of the Poedciliidae family. Wild guppies are found in Barbados, Trinidad, Guyana, and the northern part of Brazil. Wild guppies are also found in the United States, in the state of Florida. This small, freshwater fish usually lives in clear tropical waters, but they can also survive in brackish water. It says female guppies are much larger than males, and they have dull colored bodies with brighter colors enhancing the tail.
Male guppies are brilliantly colored, and the pattern and color possibilities are endless.
The amount and location of the melanophores determines the varying patterns and colors of the guppy. These recommendations are listed as follow. It suggests the use of a ten gallon aquarium or larger for guppies two months of age or older. For baby guppies, a five and one half gallon tank is sufficient. It is a good idea to have more than one tank so male and female guppies can be kept separate.