What is a guppy?
guppy, (Poecilia reticulata or Lebistes reticulatus), colourful, live-bearing freshwater fish of the family Poeciliidae, popular as a pet in home aquariums. The guppy is hardy, energetic, easily kept, and prolific.
How big do guppies get?
Guppies grow to an average of 2 inches long, so the smallest tank size we recommend is a 5-gallon aquarium for a trio of guppies. But given how quickly they reproduce, a 10- or 20-gallon aquarium would be more appropriate in the long run.
Are guppy fish good pets?
Guppies are a common and easy-to-care-for option. In fact, guppies make great pets and can be excellent additions to the tanks of both experienced fish owners and aquatic pet newbies, said Sam Williamson, former marine biologist and fish expert of more than 20 years.