Guppy
Poecilia reticulata
Guppy (Poecilia reticulata) — Easy care, Semi-aggressive, under Livebearer & Killifish. Minimum tank in the app: 13.2 US gal min; aim for 64–82°F and pH 6.8–8.2. Guppies are vibrant, adaptable fish ideal for both novice and experienced aquarists.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Americas / Africa (varies)
- Africa
- South America
- Central America & Mexico
Regional colours match the stocking calculator’s origin map.
Guppy Tank Setup
A 50L tank should feature a mix of open swimming areas and dense vegetation to support both activity and security. Utilize gentle filtration to mimic their natural habitat, and consider a varied substrate to encourage foraging. Lighting should be moderate; too bright can increase stress levels, while dim lighting can promote shyness.
What Do Guppies Eat?
Guppies have a moderate feeding speed, and competition can arise if not enough food is provided; distribute meals evenly to reduce rivalry. Their omnivorous diet means they benefit from a varied menu, which enhances their colouration and overall health.
Guppy Tank Mates
Guppies generally pair well with other small, peaceful species, such as neon tetras or certain rasboras. However, avoid larger or more aggressive fish that may view guppies as food or competition. When kept in groups, guppy dynamics are harmonious, but overcrowding or unbalanced male-to-female ratios can lead to stress and fighting.
Are Guppies Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. A frequent error is underestimating the importance of group size; keeping fewer than six can lead to stress and aggressive behaviour. neglecting water quality and stability can result in illness, as guppies are sensitive to poor parameters.
Guides that pair with this fish
- Guppy care guide — Parameters and everyday husbandry.
- Guppy tank mates — Peaceful mixes that leave fins intact.
- Guppies with bettas — When flashy tails become bait.
- Male vs female guppies — Sexing and breeding pressure basics.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




