Scientific Classification :

Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Genus: Poecilia
Class: Actinopterygii
Order: Cyprinodontiformes
Family: Poeciliidae
Species: P. reticulata

Binomial Name :

Poecilia reticulata

Guppy Fish

Guppy fish, scientifically known as Poecilia reticulata, are one of the most popular and well-known freshwater aquarium fish species. They belong to the family Poeciliidae, which also includes other popular aquarium fish such as mollies and swordtails. Guppies are small, typically growing to about 1.5 to 2.5 inches (3.8 to 6.4 cm) in length, although some varieties can grow slightly larger. They have a slender, elongated body with a rounded tail fin. Male guppies tend to be more colorful and have larger, more flamboyant fins compared to females. Female guppies are usually less colorful and have a larger, more rounded abdomen, especially when pregnant. Guppies exhibit sexual dimorphism, meaning males and females have distinct physical differences.


The guppy fish (Poecilia reticulata) is native to South America, specifically to regions in Venezuela, Barbados, Trinidad, and Brazil. They were first discovered in the mid-19th century in the streams and rivers of these areas.

History: Where do guppy fish come from?

Guppies were first described in Venezuela as Poecilia reticulata by Wilhelm Peters in 1859 and as Lebistes poecilioides in Barbados by De Filippi in 1861. It was named Girardinus guppii by Albert Günther in honor of Robert John Lechmere Guppy, who sent specimens of the species from Trinidad to the Natural History Museum in London.[7] It was reclassified as Lebistes reticulatus by Regan in 1913. Then in 1963, Rosen and Bailey brought it back to its original name, Poecilia reticulata. While the taxonomy of the species was frequently changed and resulted in many synonyms, “guppy” remains the common name even as Girardinus guppii is now considered a junior synonym of Poecilia reticulata.[5]

Best environment for guppy fish

  • Guppies are small fish, but they still require adequate space to swim and explore. A minimum tank size of 10 gallons is recommended for a small group of guppies.
  • Guppies prefer slightly alkaline water with a pH level ranging from 6.8 to 7.8. The temperature should be maintained between 72°F to 82°F (22°C to 28°C).
  • A good filtration system is necessary to keep the water clean and free from harmful substances. Guppies prefer moderate water flow.
  • Guppies appreciate a well-decorated tank with plenty of hiding places and vegetation. Live plants, such as Java moss, Java fern, and hornwort.
  • Guppies do not have specific lighting requirements, but providing a natural day-night cycle with a period of darkness is beneficial.
  • Guppies are peaceful fish and can be kept with a variety of other community fish species. Avoid aggressive or fin-nipping species that may harass or injure the guppies.

Worst environment for guppy fish

  • The worst environment for guppy fish exposing them to cold temperatures below their preferred range can lead to stress, suppressed immune function, and even death.
  • Poor water quality can result from overstocking, inadequate filtration, lack of water changes, or overfeeding. Ammonia and nitrite toxicity can cause severe stress, damage to gills, and even death.
  • An environment devoid of hiding spots can lead to constant stress and increased susceptibility to aggression.
  •  Overcrowding leads to increased competition for resources such as food and territory, elevated stress levels, and the spread of diseases.
  • Guppies prefer stable water conditions, and sudden fluctuations in temperature, pH, and water hardness can be detrimental to their health. Rapid changes in water parameters can stress the fish and weaken their immune systems, making them more susceptible to diseases.


In conclusion, guppies are fascinating and beautiful fish that make excellent additions to freshwater aquariums. Their vibrant colors, playful behavior, and ease of care have made them enduring favorites among hobbyists of all skill levels. With proper attention to their habitat, diet, and social dynamics, guppies can provide years of enjoyment and serve as an excellent introduction to the world of fishkeeping.

Average Price :

Local Guppies₹ 40 pair
Imported Guppies₹ 100 to ₹ 200 pair
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