๐Ÿ  Fish Compatibility Guide

Can Chili Rasbora and Diamond Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

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

Chili Rasbora and Diamond Tetra Compatibility Overview

Chili Rasbora and Diamond 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 Chili Rasbora and Diamond Tetra
FactorChili RasboraDiamond TetraVerdict
Temperature68โ€“82ยฐF75โ€“82ยฐFโœ… 75โ€“82ยฐF
pH Range4.0โ€“7.05.5โ€“7.0โœ… 5.5โ€“7.0
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size0.8 in2.4 inโš ๏ธ 3.0ร— difference
Min. Group8+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

Chili Rasbora โ€” Boraras brigittae

Chili Rasbora and Diamond Tetra compatibility โ€” Chili Rasbora

Vivid red nano fish from Borneo blackwater habitats. Extremely small โ€” only safe with fish too small to swallow them.

โ†’ Full Chili Rasbora care guide

Diamond Tetra โ€” Moenkhausia pittieri

Chili Rasbora and Diamond 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

Frequently Asked Questions

Can Chili Rasbora live with Diamond Tetra?

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

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

What temperature suits both Chili Rasbora and Diamond Tetra?

75โ€“82ยฐF โ€” inside Chili Rasbora's 68โ€“82ยฐF and Diamond Tetra's 75โ€“82ยฐF.

Is a Chili Rasbora aggressive toward a Diamond Tetra?

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

Related Compatibility Guides

Tank Size for Chili Rasbora and Diamond 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.