Green Guppies

Poecilia reticulata

Photo of aquarium fish Green Guppies
Natural range
  • Antigua Barbuda
  • Barbados
  • French Guiana
  • Guyana
  • Suriname
  • Trinidad and Tobago
  • Venezuela
Livebearers Up to 40 litres Conservation status: Least concern LC

A form of:Common Guppy

Family:Poeciliidae

variety Green

Other scientific names: Acanthophacelus guppii, Acanthophacelus reticulatus, Girardinus guppii, Girardinus reticulatus, Haridichthys reticulatus, Heterandria guppyi

Green Guppies, or their scientific name Poecilia reticulata (Green variety), belong to the family Poeciliidae. This name is used as a collective term to denote a number of artificially bred strains that display a dominant green coloration either in the body or in the fins. Such coloration is most often found in Neon Guppy and Moscow Guppy (European sample) strains, and to a lesser extent in Cobra Guppies.

Required aquarium volume
from 40 L
Size in aquarium
3 – 6 cm
Temperature
17 – 28 °C
Temperament
Peaceful (regular)
Parameters
Temperature17 – 28 °C
Water pHNeutral (7) – Slightly alkaline (8.5)
Water dHMedium hardness (10) – Very hard (30)
Water salinitylow (3–5 g/L)
Size in aquarium3 – 6 cm
Lifespan3 years
TemperamentPeaceful (regular)
Toward small fishnot a predator
Required aquarium volumefrom 40 L
Lightingdimmed
Substrateany (no restrictions)
Water flowweak or moderate
Swimming levelnear the surface
FeedingAny (universal)
KeepingMixed
Jumpingnoticeable

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Green Guppies get?

An adult reaches 3–6 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Green Guppies need?

The recommended volume is 40 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Green Guppies need?

Temperature 17–28 °C, pH 7–8.5, hardness 10–30 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Green Guppies live?

Around 3 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Green Guppies aggressive?

Temperament: peaceful (regular). Keep this in mind when choosing tank mates.

How many Green Guppies should be kept together?

Recommended setup: mixed (solitary / pair / group). Ignoring this is a common cause of stress and disease.

What does Green Guppies eat?

Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Green Guppies?

The scientific name of the species is Poecilia reticulata, family Poeciliidae. It also appears in the literature as: Acanthophacelus guppii, Acanthophacelus reticulatus, Girardinus guppii.

Plants and this fish

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