Guppy (noun)

1. A small, brightly colored tropical fish of the genus Poecilia, often kept in aquariums.
2. A small, brightly colored freshwater fish of the genus Poecilia that are often kept in aquariums.

Origin:

Named after robert john lechmere guppy (1836-1916), a british naturalist who discovered the species in trinidad in 1866.

Examples:

1. The guppy is a popular choice for a beginner's aquarium.
2. The guppy's bright colors make it a popular species among fish hobbyists.
3. A guppy is a small, brightly colored tropical fish of the genus Poecilia, often kept in aquariums.
4. Guppies are known for their bright colors and are very popular in the aquarium trade.
5. Guppies are also known to be hardy and easy to care for, which makes them a great choice for beginners.