Keyhole Cichlid and Watchman Goby Compatibility Overview
Keyhole Cichlid and Watchman Goby are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Keyhole Cichlid wants 4.0โ7.5 and Watchman Goby wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Keyhole Cichlid | Watchman Goby | Verdict |
|---|---|---|---|
| Temperature | 70โ82ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 4.0โ7.5 | 8.1โ8.4 | โ No overlap |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 4.3 in | 4.0 in | โ Similar |
| Min. Group | 2+ | 1+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
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
Watchman Goby โ Cryptocentrus cinctus
The Watchman Goby is a peaceful and colorful addition to the marine aquarium. It is known for its slender body and distinctive yellow and dark spot pattern. These gobies are often found in pairs or small groups and require a well-maintained saltwater tank with plenty of hiding spots. With proper care, they can thrive for several years.
Frequently Asked Questions
Can Keyhole Cichlid live with Watchman Goby?
Generally not recommended. Keyhole Cichlid and Watchman Goby are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Keyhole Cichlid wants 4.0โ7.5 and Watchman Goby wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Keyhole Cichlid and Watchman Goby together?
A minimum of 55 gallons is recommended for keeping Keyhole Cichlid and Watchman Goby together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Keyhole Cichlid and Watchman Goby?
72โ82ยฐF โ inside Keyhole Cichlid's 70โ82ยฐF and Watchman Goby's 72โ82ยฐF.
Is a Keyhole Cichlid aggressive toward a Watchman Goby?
Keyhole Cichlid is peaceful and Watchman Goby is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Keyhole Cichlid and Watchman Goby
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 | 100 gal | Best when keeping larger schools or reducing territorial pressure. |