TankStocking

Can Common Goldfish live with White Cloud Mountain Minnow?

Yes — Common Goldfish and White Cloud Mountain Minnow 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

Common Goldfish + White Cloud Mountain Minnow

✓ Good starter plan

2× Common Goldfish, 8× White Cloud Mountain Minnow

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

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Common Goldfish vs White Cloud Mountain Minnow: 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 — Common Goldfish vs White Cloud Mountain Minnow (sourced stats only)
Key factCommon GoldfishWhite Cloud Mountain Minnow
Adult size30 cm4 cm
Minimum tank75 US gal15 US gal
Minimum group2+ (pair/group)8+ (shoal)
TemperamentPeacefulPeaceful
Temperature range15–24°C14–22°C
pH range6.5–86–8.5
BioloadHighLow
Swim levelAll levelsAll levels
Beginner-friendlyNo — advancedYes

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 — Common Goldfish vs White Cloud Mountain Minnow Shared temperature window: 15–22°C (7°C overlap). Both ranges include it. Common Goldfish: 15–24°C White Cloud Mountain Minnow: 14–22°C shared 14°C32°C
Temperature range overlap. Shared temperature window: 15–22°C (7°C overlap). Both ranges include it.
pH range overlap — Common Goldfish vs White Cloud Mountain Minnow Shared pH range: 6.5–8. Both prefer water within it. Common Goldfish: 6.5–8 White Cloud Mountain Minnow: 6–8.5 shared 5.58.5
pH range overlap. Shared pH range: 6.5–8. Both prefer water within it.
Adult size to scale — Common Goldfish vs White Cloud Mountain Minnow Common Goldfish (30 cm) is 7.5× the length of White Cloud Mountain Minnow (4 cm) — above the 3.5× line, but Common Goldfish is peaceful, so it isn't treated as a predator. Common Goldfish: 30 cm White Cloud Mountain Minnow: 4 cm 14 cm = 3.5× line 0 cm
Adult size to scale. Common Goldfish (30 cm) is 7.5× the length of White Cloud Mountain Minnow (4 cm) — above the 3.5× line, but Common Goldfish is peaceful, so it isn't treated as a predator.
Sources & confidence (2 species)

These back the Common Goldfish and White Cloud Mountain Minnow 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.

  • Common Goldfish Carassius auratus — The Aquarium Wiki (theaquariumwiki.com/wiki/Carassius_auratus); Fishlore Goldfish Care high confidence
  • White Cloud Mountain Minnow Tanichthys albonubes — Seriously Fish (seriouslyfish.com/species/tanichthys-albonubes) 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 75 US gallons (284 L), with a pair of Common Goldfish and a group of 8+ White Cloud Mountain Minnow, in a cycled, planted tank. Test your exact plan below.

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      Verdict

      More matches for Common Goldfish

      Other species the engine clears with Common Goldfish — 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 Common Goldfish live with White Cloud Mountain Minnow?

      Yes — Common Goldfish and White Cloud Mountain Minnow 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 Common Goldfish and White Cloud Mountain Minnow need together?

      Plan for at least 75 US gallons so both species clear their minimum-tank needs, with a pair of Common Goldfish and a group of 8+ White Cloud Mountain Minnow. More water and a planted layout with broken sightlines always help.

      Related to Common Goldfish & White Cloud Mountain Minnow

      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 full fish list.