Can Betta live with Guppy?
Troubleshooting community setups: see the compatibility result using temperature, pH, GH/KH, adult size, behavior, schooling needs, and predator/prey rules.
Quick Summary: Sometimes, but only if the warnings are handled. We evaluated Betta and Guppy for 2 specific conflict codes. Plan for at least 10 gallons.
Caution, conditional match
Data confidence: high
- aggression_riskAggression or territorial behavior needs extra space, cover, and careful observation.
- fin_nipping_riskBetta and guppy pairings are caution only: long fins and bright color can trigger betta aggression or guppy fin nipping, temperament varies by individual, and success depends on a larger planted tank with cover, hiding places, and a backup plan.
betta | guppy | betta | guppy
Water parameter comparison
Betta temperature76-82F
Guppy temperature72-82F
Betta pH6.5-7.8
Guppy pH7-8.2
Betta GH3-12 dGH
Guppy GH8-20 dGH
Minimum tank10 gal
Last updated2026-05-13
Confidence: high. Aggression, predator/prey, shrimp risk, schooling, and tank size rules are evaluated from curated freshwater attributes.
Common Questions
Can Betta live with Guppy?
Sometimes, but only if the warnings are handled. Main reason codes: aggression_risk, fin_nipping_risk.
What tank size do Betta and Guppy need?
Plan at least 10 gallons before adjusting for group size, filtration, and aquascape layout.
Next steps
Check bioload
Calculate if your tank volume and filtration can support this pairing.
Stocking plannerFind more mates
See other compatible species for your setup.
Mate finderWater check
Ensure your tap water matches these species.
Water matcher