๐Ÿ  Fish Compatibility Guide

Can Keyhole Cichlid and Pearl Danio Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 98/100
98/100 โ€” Compatible

Keyhole Cichlid and Pearl Danio Compatibility Overview

Keyhole Cichlid and Pearl Danio 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.

Compatibility factors for Keyhole Cichlid and Pearl Danio
FactorKeyhole CichlidPearl DanioVerdict
Temperature70โ€“82ยฐF72โ€“79ยฐFโœ… 72โ€“79ยฐF
pH Range4.0โ€“7.56.5โ€“7.5โœ… 6.5โ€“7.5
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size4.3 in2.5 inโœ… Similar
Min. Group2+6+See below
Min. Tank Size55 gallons (for both species)โ€”

Compatibility Positives

A stable shared temperature range is available.
Their pH requirements overlap.
Temperament risk is relatively low when normal group sizes are maintained.

Caution Points

No major compatibility issues identified for this pair.

Species Profiles

Keyhole Cichlid โ€” Cleithracara maronii

Keyhole Cichlid and Pearl Danio compatibility โ€” Keyhole Cichlid

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

Pearl Danio โ€” Danio albolineatus

Keyhole Cichlid and Pearl Danio compatibility โ€” Pearl Danio

The Pearl Danio is a popular freshwater fish known for its shimmering blue and white colors. It is a peaceful community fish that can be kept in a tank with other peaceful species. These fish are moderately active and do not require a large tank. They are suitable for beginners due to their hardiness and ease of care.

โ†’ Full Pearl Danio care guide

Frequently Asked Questions

Can Keyhole Cichlid live with Pearl Danio?

Yes, in a well-planned setup. Keyhole Cichlid and Pearl Danio 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 Pearl Danio together?

A minimum of 55 gallons is recommended for keeping Keyhole Cichlid and Pearl Danio together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Keyhole Cichlid and Pearl Danio?

72โ€“79ยฐF โ€” inside Keyhole Cichlid's 70โ€“82ยฐF and Pearl Danio's 72โ€“79ยฐF.

Is a Keyhole Cichlid aggressive toward a Pearl Danio?

Keyhole Cichlid is peaceful and Pearl Danio is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Keyhole Cichlid and Pearl Danio

Use the scenario that matches the actual group sizes and temperament you plan to keep.

ScenarioTankWhen it applies
Minimum viable55 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community75 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup125 galBest when keeping larger schools or reducing territorial pressure.