๐Ÿ  Fish Compatibility Guide

Can Chili Rasbora and Hillstream Loach Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 80/100
80/100 โ€” Compatible

Chili Rasbora and Hillstream Loach Compatibility Overview

Chili Rasbora and Hillstream Loach 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 Hillstream Loach
FactorChili RasboraHillstream LoachVerdict
Temperature68โ€“82ยฐF68โ€“75ยฐFโœ… 68โ€“75ยฐF
pH Range4.0โ€“7.06.0โ€“7.5โœ… 6.0โ€“7.0
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size0.8 in2.6 inโš ๏ธ 3.2ร— difference
Min. Group8+4+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

Chili Rasbora โ€” Boraras brigittae

Chili Rasbora and Hillstream Loach 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

Hillstream Loach โ€” Sewellia lineolata

Chili Rasbora and Hillstream Loach compatibility โ€” Hillstream Loach

Sewellia lineolata, known as the Hillstream Loach, is a fascinating species for aquarists. These fish require a well-oxygenated, clear water environment with plenty of hiding spots. With a lifespan of 7 years, they are a long-term commitment. Their olive green color and slender body shape add a unique aesthetic to the tank.

โ†’ Full Hillstream Loach care guide

Frequently Asked Questions

Can Chili Rasbora live with Hillstream Loach?

Yes, in a well-planned setup. Chili Rasbora and Hillstream Loach 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 Hillstream Loach together?

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

What temperature suits both Chili Rasbora and Hillstream Loach?

68โ€“75ยฐF โ€” inside Chili Rasbora's 68โ€“82ยฐF and Hillstream Loach's 68โ€“75ยฐF.

Is a Chili Rasbora aggressive toward a Hillstream Loach?

Chili Rasbora is peaceful and Hillstream Loach is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Chili Rasbora and Hillstream Loach

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.