Guppy

Poecilia reticulata

Also known as: Fancy Guppy, Millionfish

The endlessly colorful, endlessly breeding beginner classic — keep more females than males.

Water

Freshwater

Temperature

72–82°F

pH

6.8–8

Hardness

8–25 dGH

Max size

2.4 in

Min tank

10 gal

Temperament

Peaceful

Social

Groups (3+)

Swim level

All

Diet

Omnivore

Care level

Beginner

Lifespan

2-3 years

Breeding

Livebearer

Suitability

Common

Origin

Northeastern South America (and worldwide strains)

Guppies are livebearers that reproduce readily, so a 2:1 or 3:1 female-to-male ratio reduces harassment. They prefer harder, alkaline water and come in countless tail and color strains.