TankStocking

Can Guppy (Fancy) live with Endler's Livebearer?

Yes — Guppy (Fancy) and Endler's Livebearer are a workable pairing in a suitable, cycled tank.

By the TankStocking team · methodology-driven, sourced from aquarium care references Data v2026.06 · last reviewed How we judge this →

The planner's verdict

Guppy (Fancy) + Endler's Livebearer

✓ Good starter plan

3× Guppy (Fancy), 3× Endler's Livebearer

The engine clears this pairing — a workable starting point in a cycled, planted tank.

Load this build in the planner ↑

Guppy (Fancy) vs Endler's Livebearer: key facts

A neutral, side-by-side look at each species' sourced stats. These are figures only — the verdict above states whether they should share a tank.

Key facts side by side — Guppy (Fancy) vs Endler's Livebearer (sourced stats only)
Key factGuppy (Fancy)Endler's Livebearer
Adult size5 cm3 cm
Minimum tank10 US gal10 US gal
Minimum group3+ (pair/group)3+ (pair/group)
TemperamentPeacefulPeaceful
Temperature range22–28°C22–28°C
pH range7–87–8.5
BioloadLowLow
Swim levelAll levelsAll levels
Beginner-friendlyYesYes

Why, at a glance

Drawn straight from the sourced figures above, using the same thresholds the engine applies — these show the data behind the verdict, not a separate opinion.

Temperature range overlap — Guppy (Fancy) vs Endler's Livebearer Shared temperature window: 22–28°C (6°C overlap). Both ranges include it. Guppy (Fancy): 22–28°C Endler's Livebearer: 22–28°C shared 14°C32°C
Temperature range overlap. Shared temperature window: 22–28°C (6°C overlap). Both ranges include it.
pH range overlap — Guppy (Fancy) vs Endler's Livebearer Shared pH range: 7–8. Both prefer water within it. Guppy (Fancy): 7–8 Endler's Livebearer: 7–8.5 shared 5.58.5
pH range overlap. Shared pH range: 7–8. Both prefer water within it.
Adult size to scale — Guppy (Fancy) vs Endler's Livebearer Guppy (Fancy) (5 cm) is 1.7× the length of Endler's Livebearer (3 cm) — under the 3.5× size gap that flags predation risk. Guppy (Fancy): 5 cm Endler's Livebearer: 3 cm 10.5 cm = 3.5× line 0 cm
Adult size to scale. Guppy (Fancy) (5 cm) is 1.7× the length of Endler's Livebearer (3 cm) — under the 3.5× size gap that flags predation risk.
Sources & confidence (2 species)

These back the Guppy (Fancy) and Endler's Livebearer figures used for this verdict. Each figure is read from the TankStocking species database (v2026.06); below is the care reference behind it and how confident we are in that data. Confidence reflects the source quality, not whether any pairing is safe. Full source list and the welfare model are on the methodology page.

  • Guppy (Fancy) Poecilia reticulata — Aquarium Co-Op guppy care guide / FishBase Poecilia reticulata high confidence
  • Endler's Livebearer Poecilia wingei — Aquarium Co-Op Endler's care guide / The Aquarium Wiki (Poecilia wingei) high confidence

Why

No welfare check fires for this pairing: their adult sizes, temperaments, temperature ranges and social needs line up. Keep each in its proper group and give the tank time to mature.

A workable setup: at least 20 US gallons (76 L), with a group of 3+ Guppy (Fancy) and a group of 3+ Endler's Livebearer, in a cycled, planted tank. Test your exact plan below.

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      Verdict

      More matches for Guppy (Fancy)

      Other species the engine clears with Guppy (Fancy) — tap a name for its care guide, or use + to load the pairing in the planner.

      What to watch in the first two weeks

      Compatibility on paper is only a starting point; the first fortnight is where you actually learn how these two get on. Add the established or calmer species first, give the tank a few days, then introduce the other — and keep watching, because the early days reveal more than any chart.

      • Feeding time — watch whether one species muscles the other off the food. A fish that consistently misses meals is the one that quietly fails first.
      • The shy fish — if one species hides constantly, stops eating, or shows clamped fins, the mix is stressing it, regardless of what the verdict says.
      • Just before lights-on and after lights-out — chasing and bullying often happen at the edges of the day when you are not looking. A quick check then tells you a lot.
      • Have a plan B — a divider, a spare cycled tank, or a way to rehome. The keepers who avoid disasters are the ones ready to separate fish at the first real sign of trouble.

      Common questions

      Can Guppy (Fancy) live with Endler's Livebearer?

      Yes — Guppy (Fancy) and Endler's Livebearer are a workable pairing in a suitable, cycled tank. TankStocking's engine reaches this by checking minimum tank size, group needs, temperature overlap, aggression, predation by size and fin-nipping for this exact pairing.

      What tank size do Guppy (Fancy) and Endler's Livebearer need together?

      Plan for at least 20 US gallons so both species clear their minimum-tank needs, with a group of 3+ Guppy (Fancy) and a group of 3+ Endler's Livebearer. More water and a planted layout with broken sightlines always help.

      Related to Guppy (Fancy) & Endler's Livebearer

      Related guides on TankStocking — each scored by the same welfare engine as the planner.

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      This is a planning estimate based on sourced species data — individual fish vary. See the methodology, the Guppy (Fancy) tank mates guide, or the full fish list.