Congo Tetra and Keyhole Cichlid Compatibility Overview
Congo Tetra 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 | Congo Tetra | Keyhole Cichlid | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 70โ82ยฐF | โ 73โ82ยฐF |
| pH Range | 6.0โ7.5 | 4.0โ7.5 | โ 6.0โ7.5 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 3.1 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
Congo Tetra โ Phenacogrammus interruptus
The Congo Tetra is a vibrant and active fish that thrives in a well-maintained freshwater aquarium. With its striking coloration and peaceful nature, it's a great addition to any community tank. This species is best kept in groups and requires a spacious tank with plenty of swimming space.
โ Full Congo Tetra 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 Congo Tetra live with Keyhole Cichlid?
Yes, in a well-planned setup. Congo Tetra 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 Congo Tetra and Keyhole Cichlid together?
A minimum of 55 gallons is recommended for keeping Congo Tetra and Keyhole Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Congo Tetra and Keyhole Cichlid?
73โ82ยฐF โ inside Congo Tetra's 73โ82ยฐF and Keyhole Cichlid's 70โ82ยฐF.
Is a Congo Tetra aggressive toward a Keyhole Cichlid?
Congo Tetra is peaceful and Keyhole Cichlid is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Congo Tetra 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. |