๐Ÿ  Fish Compatibility Guide

Can Diamond Tetra and Neon Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 85/100
85/100 โ€” Compatible

Diamond Tetra and Neon Tetra Compatibility Overview

Diamond Tetra and Neon 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 Neon Tetra
FactorDiamond TetraNeon TetraVerdict
Temperature75โ€“82ยฐF72โ€“80ยฐFโœ… 75โ€“80ยฐF
pH Range5.5โ€“7.06.0โ€“7.5โœ… 6.0โ€“7.0
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size2.4 in1.5 inโœ… Similar
Min. Group6+6+See below
Min. Tank Size20 gallons (for both species)โ€”

Compatibility Positives

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

Caution Points

Their pH ranges overlap only partly, so aim for the shared band and keep it steady.

Species Profiles

Diamond Tetra โ€” Moenkhausia pittieri

Diamond Tetra and Neon 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

Neon Tetra โ€” Paracheirodon innesi

Diamond Tetra and Neon Tetra compatibility โ€” Neon Tetra

Iconic schooling fish with vivid electric-blue and red stripes. Hardy in captivity; suitable for most peaceful community setups.

โ†’ Full Neon Tetra care guide

Frequently Asked Questions

Can Diamond Tetra live with Neon Tetra?

Yes, in a well-planned setup. Diamond Tetra and Neon 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 Neon Tetra together?

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

What temperature suits both Diamond Tetra and Neon Tetra?

75โ€“80ยฐF โ€” inside Diamond Tetra's 75โ€“82ยฐF and Neon Tetra's 72โ€“80ยฐF.

Is a Diamond Tetra aggressive toward a Neon Tetra?

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

Related Compatibility Guides

Tank Size for Diamond Tetra and Neon 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.