๐Ÿ  Fish Compatibility Guide

Can Diamond Tetra and Glowlight Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 96/100
96/100 โ€” Compatible

Diamond Tetra and Glowlight Tetra Compatibility Overview

Diamond Tetra and Glowlight Tetra 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 20-gallon tank is recommended to provide adequate territory and water volume for both species.

Compatibility factors for Diamond Tetra and Glowlight Tetra
FactorDiamond TetraGlowlight TetraVerdict
Temperature75โ€“82ยฐF75โ€“82ยฐFโœ… 75โ€“82ยฐF
pH Range5.5โ€“7.05.5โ€“7.5โœ… 5.5โ€“7.0
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size2.4 in1.6 inโœ… Similar
Min. Group6+6+See below
Min. Tank Size20 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

Diamond Tetra โ€” Moenkhausia pittieri

Diamond Tetra and Glowlight Tetra compatibility โ€” Diamond Tetra

The Diamond Tetra is a popular freshwater fish known for its vibrant colors and peaceful nature. It is well-suited for community tanks and can thrive in a variety of water conditions. With a moderate activity level and a preference for schools, this species is a great addition to any beginner or intermediate aquarist's tank.

โ†’ Full Diamond Tetra care guide

Glowlight Tetra โ€” Hemigrammus erythrozonus

Diamond Tetra and Glowlight Tetra 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

Frequently Asked Questions

Can Diamond Tetra live with Glowlight Tetra?

Yes, in a well-planned setup. Diamond Tetra and Glowlight Tetra 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 20-gallon tank is recommended to provide adequate territory and water volume for both species.

What tank size do I need for Diamond Tetra and Glowlight Tetra together?

A minimum of 20 gallons is recommended for keeping Diamond Tetra and Glowlight Tetra together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Diamond Tetra and Glowlight Tetra?

75โ€“82ยฐF โ€” inside Diamond Tetra's 75โ€“82ยฐF and Glowlight Tetra's 75โ€“82ยฐF.

Is a Diamond Tetra aggressive toward a Glowlight Tetra?

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

Related Compatibility Guides

Tank Size for Diamond Tetra and Glowlight Tetra

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

ScenarioTankWhen it applies
Minimum viable20 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community29 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup55 galBest when keeping larger schools or reducing territorial pressure.