Betta and Bronze Corydoras Compatibility
Betta (Siamese Fighting Fish) and Bronze Corydoras can work with precautions: temperature ranges overlap at 76–80°F, but the pairing needs the right setup and group sizes. Plan on at least 20 gallons. Individual fish vary — observe behaviour during introduction.
Betta vs Bronze Corydoras at a glance
| Aspect | Betta | Bronze Corydoras |
|---|---|---|
| Adult size | ~2.5 in | ~2.5 in |
| Minimum tank | 5 gal | 20 gal |
| Temperature | 76–82°F | 72–80°F |
| pH | 6.5–7.5 | 6–8 |
| Temperament | semi-aggressive | peaceful |
| Swimming zone | top | bottom |
| Group size | singly OK | 6+ |
| Care level | easy | easy |
Overlap in temperature: 76–80°F. Overlap in pH: 6.5–7.5.
Why this verdict
- Temperature: Shared range of 76–80°F.
- Water parameters: Shared pH range of 6.5–7.5.
- Temperament: Betta (Siamese Fighting Fish) can be territorial; provide plants, sight breaks, and space.
- Adult size: Comparable adult sizes (~2.5" and ~2.5").
- Swimming zone: Complementary layers (top + bottom) reduce competition for space.
- Schooling: Group sizes matter: Bronze Corydoras: keep at least 6.
- Tank size: Plan for at least 20 gallons to satisfy both species.
Main risks
- Occasional chasing or fin nipping is possible.
- Corydoras are peaceful and armoured, so outright predation is unlikely.
- A betta may still claim the bottom half of a small tank and stress corys at feeding time.
Exceptions & caveats
Works best in a 20+ gallon tank with a soft substrate and a group of 6+ corys; some bettas simply ignore them.
Recommended tank
Plan on 20 gallons or larger for this pair. Suitable sizes: 20 gallon High, 20 gallon Long, 29 gallon.
Group sizes: Bronze Corydoras: keep at least 6.
Sources
- FishBase — Scientific Database · Primary / scientific · https://www.fishbase.se/
- SeriouslyFish — Specialist Publication · High authority · https://www.seriouslyfish.com/
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
- FishBase — Scientific Database · Primary / scientific · https://www.fishbase.se/
- SeriouslyFish — Specialist Publication · High authority · https://www.seriouslyfish.com/
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
Compatibility verdicts are planning guidance, not guarantees — individual fish vary. Rule version 1.1 · Data reviewed: .
Frequently asked questions
Can Betta and Bronze Corydoras live together?
Our verdict is “Conditional”. Betta (Siamese Fighting Fish) and Bronze Corydoras can work with precautions: temperature ranges overlap at 76–80°F, but the pairing needs the right setup and group sizes. Plan on at least 20 gallons. Individual fish vary — observe behaviour during introduction.
What tank size do Betta and Bronze Corydoras need?
Plan for at least 20 gallons so both species have their minimum space — Betta needs 5+ gal and Bronze Corydoras needs 20+ gal. Adding length and cover reduces stress further.
What temperature do Betta and Bronze Corydoras share?
Their comfortable ranges overlap at 76–80°F. Hold the tank near the middle of that band and avoid the extremes of either species' range.
What are the main risks keeping Betta with Bronze Corydoras?
Occasional chasing or fin nipping is possible. Corydoras are peaceful and armoured, so outright predation is unlikely. A betta may still claim the bottom half of a small tank and stress corys at feeding time.
How many Betta and Bronze Corydoras should I keep?
Bronze Corydoras: keep at least 6. Group sizes matter for shoaling fish — too few and they become stressed and nippy.
Canonical https://aquariumforge.com/compatibility/betta/corydoras/