๐Ÿ  Fish Compatibility Guide

Can Glowlight Tetra and Keyhole Cichlid Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 90/100
90/100 โ€” Compatible

Glowlight Tetra and Keyhole Cichlid Compatibility Overview

Glowlight 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.

Compatibility factors for Glowlight Tetra and Keyhole Cichlid
FactorGlowlight TetraKeyhole CichlidVerdict
Temperature75โ€“82ยฐF70โ€“82ยฐFโœ… 75โ€“82ยฐF
pH Range5.5โ€“7.54.0โ€“7.5โœ… 5.5โ€“7.5
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size1.6 in4.3 inโš ๏ธ 2.7ร— difference
Min. Group6+2+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

Glowlight Tetra โ€” Hemigrammus erythrozonus

Glowlight Tetra and Keyhole Cichlid compatibility โ€” Glowlight Tetra

The Glowlight Tetra is a vibrant, peaceful community fish known for its silver body and bright red-gold highlights. It thrives in a well-planted tank with plenty of swimming space and a gentle water flow. These tetras are easy to care for and are suitable for beginners.

โ†’ Full Glowlight Tetra care guide

Keyhole Cichlid โ€” Cleithracara maronii

Glowlight Tetra and Keyhole Cichlid 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

Frequently Asked Questions

Can Glowlight Tetra live with Keyhole Cichlid?

Yes, in a well-planned setup. Glowlight 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 Glowlight Tetra and Keyhole Cichlid together?

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

What temperature suits both Glowlight Tetra and Keyhole Cichlid?

75โ€“82ยฐF โ€” inside Glowlight Tetra's 75โ€“82ยฐF and Keyhole Cichlid's 70โ€“82ยฐF.

Is a Glowlight Tetra aggressive toward a Keyhole Cichlid?

Glowlight Tetra is peaceful and Keyhole Cichlid is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Glowlight Tetra and Keyhole Cichlid

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.