๐Ÿ  Fish Compatibility Guide

Can Hillstream Loach and X Ray Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 86/100
86/100 โ€” Compatible

Hillstream Loach and X Ray Tetra Compatibility Overview

Hillstream Loach and X Ray 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 Hillstream Loach and X Ray Tetra
FactorHillstream LoachX Ray TetraVerdict
Temperature68โ€“75ยฐF72โ€“82ยฐFโš ๏ธ 72โ€“75ยฐF (narrow)
pH Range6.0โ€“7.56.0โ€“7.5โœ… 6.0โ€“7.5
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size2.6 in1.8 inโœ… Similar
Min. Group4+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

Hillstream Loach โ€” Sewellia lineolata

Hillstream Loach and X Ray Tetra 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

X Ray Tetra โ€” Pristella maxillaris

Hillstream Loach and X Ray Tetra compatibility โ€” X Ray Tetra

The Pristella maxillaris, also known as the X-Ray Tetra, is a popular freshwater fish known for its unique appearance and peaceful nature. They are slender and iridescent, with a clear, almost x-ray-like body. They are best kept in groups of 6 or more and thrive in well-planted tanks with a moderate water flow.

โ†’ Full X Ray Tetra care guide

Frequently Asked Questions

Can Hillstream Loach live with X Ray Tetra?

Yes, in a well-planned setup. Hillstream Loach and X Ray 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 Hillstream Loach and X Ray Tetra together?

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

What temperature suits both Hillstream Loach and X Ray Tetra?

72โ€“75ยฐF (narrow) โ€” inside Hillstream Loach's 68โ€“75ยฐF and X Ray Tetra's 72โ€“82ยฐF.

Is a Hillstream Loach aggressive toward a X Ray Tetra?

Hillstream Loach is peaceful and X Ray Tetra is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Hillstream Loach and X Ray 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.