Keyhole Cichlid and Threadfin Rainbowfish Compatibility Overview
Keyhole Cichlid and Threadfin Rainbowfish 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 | Keyhole Cichlid | Threadfin Rainbowfish | Verdict |
|---|---|---|---|
| Temperature | 70โ82ยฐF | 72โ86ยฐF | โ 72โ82ยฐF |
| pH Range | 4.0โ7.5 | 5.0โ8.0 | โ 5.0โ7.5 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 4.3 in | 1.6 in | โ ๏ธ 2.7ร difference |
| Min. Group | 2+ | 6+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
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.
โ Full Keyhole Cichlid care guide
Threadfin Rainbowfish โ Iriatherina werneri
The Threadfin Rainbowfish is a popular choice for freshwater aquariums due to its vibrant colors and peaceful nature. It requires a well-maintained tank with plenty of swimming space and a moderate water flow. These fish are not known to be aggressive and can be kept in community tanks with other peaceful species.
Frequently Asked Questions
Can Keyhole Cichlid live with Threadfin Rainbowfish?
Yes, in a well-planned setup. Keyhole Cichlid and Threadfin Rainbowfish 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 Keyhole Cichlid and Threadfin Rainbowfish together?
A minimum of 55 gallons is recommended for keeping Keyhole Cichlid and Threadfin Rainbowfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Keyhole Cichlid and Threadfin Rainbowfish?
72โ82ยฐF โ inside Keyhole Cichlid's 70โ82ยฐF and Threadfin Rainbowfish's 72โ86ยฐF.
Is a Keyhole Cichlid aggressive toward a Threadfin Rainbowfish?
Keyhole Cichlid is peaceful and Threadfin Rainbowfish is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Keyhole Cichlid and Threadfin Rainbowfish
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. |