AquaStocker

Can a Guppy Live With a Goldfish (Fancy)?

With caution — a guppy and goldfish (fancy) can work, but watch the details.

Updated June 2026
By the AquaStocker team · How we source our data
Maybe — with caution
GuppyGuppy
2.0" · 10g min · 72–82°F · Peaceful
+
Goldfish (Fancy)Goldfish (Fancy)
8.0" · 20g min · 65–75°F · Peaceful
Temperatures line up — both thrive around 72–75°F.
pH preferences overlap (7–8) — easy to keep both comfortable.
Big size gap — keep an eye on the small guppy around the much larger goldfish (fancy).
Plan on at least 20 gallons for the pair (the larger of their two minimums).

Plan the full tank with the stocking calculator →

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Aquarium water test kitwatch your parametersAquarium filtermore filtration = headroomAquarium heaterstable temperature20 gallon aquariumroom for both

FAQ

Can a guppy and goldfish (fancy) live together?
With caution — a guppy and goldfish (fancy) can work, but watch the details. Minimum tank for the pair is about 20 gallons.

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