๐Ÿ  Fish Compatibility Guide

Can Julii Cory and X Ray Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 92/100
92/100 โ€” Compatible

Julii Cory and X Ray Tetra Compatibility Overview

Julii Cory 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 Julii Cory and X Ray Tetra
FactorJulii CoryX Ray TetraVerdict
Temperature68โ€“79ยฐF72โ€“82ยฐFโœ… 72โ€“79ยฐF
pH Range5.5โ€“7.56.0โ€“7.5โœ… 6.0โ€“7.5
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size2.2 in1.8 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

Julii Cory โ€” Corydoras julii

Julii Cory and X Ray Tetra compatibility โ€” Julii Cory

The Julii Cory is a popular, peaceful bottom-dweller that thrives in community tanks. With a lifespan of up to 5 years, they are suitable for beginners and experienced aquarists alike. These fish are known for their dark brown coloration with distinctive white spots and a slender, flat body shape.

โ†’ Full Julii Cory care guide

X Ray Tetra โ€” Pristella maxillaris

Julii Cory 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 Julii Cory live with X Ray Tetra?

Yes, in a well-planned setup. Julii Cory 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 Julii Cory and X Ray Tetra together?

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

What temperature suits both Julii Cory and X Ray Tetra?

72โ€“79ยฐF โ€” inside Julii Cory's 68โ€“79ยฐF and X Ray Tetra's 72โ€“82ยฐF.

Is a Julii Cory aggressive toward a X Ray Tetra?

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

Related Compatibility Guides

Tank Size for Julii Cory and X Ray Tetra

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

ScenarioTankWhen it applies
Minimum viable21 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.