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Can a Betta Live With a Goldfish (Fancy)?

Not recommended — a betta and goldfish (fancy) are a risky mix.

Updated June 2026
By the AquaStocker team · How we source our data
Not recommended
BettaBetta
2.8" · 5g min · 76–82°F · Semi-aggressive
+
Goldfish (Fancy)Goldfish (Fancy)
8.0" · 20g min · 65–75°F · Peaceful
Temperature clash — the betta (76–82°F) and goldfish (fancy) (65–75°F) don't share a safe range.
pH preferences overlap (7–7.5) — easy to keep both comfortable.
Plan on at least 20 gallons for the pair (the larger of their two minimums).

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

FAQ

Can a betta and goldfish (fancy) live together?
Not recommended — a betta and goldfish (fancy) are a risky mix. Minimum tank for the pair is about 20 gallons.

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