TankStocking

Can Guppy (Fancy) live with Bronze Corydoras?

Yes — Guppy (Fancy) and Bronze Corydoras 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) + Bronze Corydoras

✓ Good starter plan

3× Guppy (Fancy), 6× Bronze Corydoras

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

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Guppy (Fancy) vs Bronze Corydoras: 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 Bronze Corydoras (sourced stats only)
Key factGuppy (Fancy)Bronze Corydoras
Adult size5 cm7 cm
Minimum tank10 US gal20 US gal
Minimum group3+ (pair/group)6+ (shoal)
TemperamentPeacefulPeaceful
Temperature range22–28°C22–26°C
pH range7–86–7.8
BioloadLowMedium
Swim levelAll levelsBottom
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 Bronze Corydoras Shared temperature window: 22–26°C (4°C overlap). Both ranges include it. Guppy (Fancy): 22–28°C Bronze Corydoras: 22–26°C shared 14°C32°C
Temperature range overlap. Shared temperature window: 22–26°C (4°C overlap). Both ranges include it.
pH range overlap — Guppy (Fancy) vs Bronze Corydoras Shared pH range: 7–7.8. Both prefer water within it. Guppy (Fancy): 7–8 Bronze Corydoras: 6–7.8 shared 5.58.5
pH range overlap. Shared pH range: 7–7.8. Both prefer water within it.
Adult size to scale — Guppy (Fancy) vs Bronze Corydoras Bronze Corydoras (7 cm) is 1.4× the length of Guppy (Fancy) (5 cm) — under the 3.5× size gap that flags predation risk. Guppy (Fancy): 5 cm Bronze Corydoras: 7 cm 17.5 cm = 3.5× line 0 cm
Adult size to scale. Bronze Corydoras (7 cm) is 1.4× the length of Guppy (Fancy) (5 cm) — under the 3.5× size gap that flags predation risk.
Sources & confidence (2 species)

These back the Guppy (Fancy) and Bronze Corydoras 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
  • Bronze Corydoras Corydoras aeneus — Seriously Fish (seriouslyfish.com/species/corydoras-aeneus) 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 6+ Bronze Corydoras, in a cycled, planted tank. Test your exact plan below.

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      Common questions

      Can Guppy (Fancy) live with Bronze Corydoras?

      Yes — Guppy (Fancy) and Bronze Corydoras 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 Bronze Corydoras 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 6+ Bronze Corydoras. More water and a planted layout with broken sightlines always help.

      Related to Guppy (Fancy) & Bronze Corydoras

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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.