Black Ruby Barb and Keyhole Cichlid Compatibility Overview
Black Ruby Barb 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 | Black Ruby Barb | Keyhole Cichlid | Verdict |
|---|---|---|---|
| Temperature | 68โ81ยฐF | 70โ82ยฐF | โ 70โ81ยฐF |
| pH Range | 5.5โ7.5 | 4.0โ7.5 | โ 5.5โ7.5 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 2.2 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
Black Ruby Barb โ Pethia nigrofasciata
The Black Ruby Barb is a vibrant, active species suitable for beginners. It requires a spacious tank and a school of its own kind to thrive. Its striking colors and lively nature make it a popular choice.
โ Full Black Ruby Barb 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 Black Ruby Barb live with Keyhole Cichlid?
Yes, in a well-planned setup. Black Ruby Barb 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 Black Ruby Barb and Keyhole Cichlid together?
A minimum of 55 gallons is recommended for keeping Black Ruby Barb and Keyhole Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Ruby Barb and Keyhole Cichlid?
70โ81ยฐF โ inside Black Ruby Barb's 68โ81ยฐF and Keyhole Cichlid's 70โ82ยฐF.
Is a Black Ruby Barb aggressive toward a Keyhole Cichlid?
Black Ruby Barb is peaceful and Keyhole Cichlid is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Black Ruby Barb 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. |