Compatibility Overview
Betta Fish and Corydoras Catfish can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Betta Fish | Corydoras Catfish | Verdict |
|---|---|---|---|
| Temperature | 76–82°F | 70–79°F | ⚠️ 76–79°F (narrow) |
| pH Range | 6.5–7.5 | 6.0–8.0 | ✅ 6.5–7.5 |
| Temperament | aggressive | peaceful | ❌ Risk |
| Adult Size | 3 in | 2.5 in | ✅ Similar |
| Min. Group | 1+ | 6+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Betta Fish — Betta splendens
Vibrant labyrinth fish from Southeast Asia. Males are highly territorial toward other bettas and fin-nippers; compatible with many peaceful species in large, planted tanks.
Corydoras Catfish — Corydoras spp.
Armoured bottom-dwelling catfish that are peaceful with all non-aggressive species. Need fine sand substrate to protect delicate barbels.
Frequently Asked Questions
Can Betta Fish live with Corydoras Catfish?
Yes, in a well-planned setup. Betta Fish and Corydoras Catfish can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Betta Fish and Corydoras Catfish together?
A minimum of 55 gallons is recommended for keeping Betta Fish and Corydoras Catfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Betta Fish and Corydoras Catfish?
76–79°F (narrow)
Is a Betta Fish aggressive toward a Corydoras Catfish?
Betta Fish is aggressive and Corydoras Catfish is peaceful. Narrow temperature overlap (76–79°F) — keeping the tank at exactly 77–78°F is needed for both species.