Corydoras and Keyhole Cichlid Compatibility Overview
Corydoras Catfish and Keyhole Cichlid can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, 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 | Corydoras Catfish | Keyhole Cichlid | Verdict |
|---|---|---|---|
| Temperature | 70โ79ยฐF | 70โ82ยฐF | โ 70โ79ยฐF |
| pH Range | 6.0โ8.0 | 4.0โ7.5 | โ 6.0โ7.5 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 2.5 in | 4.3 in | โ Similar |
| Min. Group | 6+ | 2+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Corydoras Catfish โ Corydoras spp.
Armoured bottom-dwelling catfish that are peaceful with all non-aggressive species. Need fine sand substrate to protect delicate barbels.
โ Full Corydoras Catfish care guide
Keyhole Cichlid โ Cleithracara maronii
The Keyhole Cichlid is a popular choice for beginners due to its relatively easy care and peaceful temperament. These fish are known for their distinct keyhole marking and vibrant coloration. They do well in a community tank with other peaceful species, but should be provided with plenty of hiding spots to feel secure.
Frequently Asked Questions
Can Corydoras Catfish live with Keyhole Cichlid?
Yes, in a well-planned setup. Corydoras Catfish and Keyhole Cichlid can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, 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 Corydoras Catfish and Keyhole Cichlid together?
A minimum of 55 gallons is recommended for keeping Corydoras Catfish and Keyhole Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Corydoras Catfish and Keyhole Cichlid?
70โ79ยฐF โ inside Corydoras Catfish's 70โ79ยฐF and Keyhole Cichlid's 70โ82ยฐF.
Is a Corydoras Catfish aggressive toward a Keyhole Cichlid?
Corydoras Catfish is peaceful and Keyhole Cichlid is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Corydoras and Keyhole Cichlid
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |