๐Ÿ  Fish Compatibility Guide

Can Julii Cory and Serpae Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 91/100
91/100 โ€” Compatible

Julii Cory and Serpae Tetra Compatibility Overview

Julii Cory and Serpae Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Julii Cory is peaceful and Serpae Tetra is semi, so give them room and cover rather than assuming they will ignore each other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.

Compatibility factors for Julii Cory and Serpae Tetra
FactorJulii CorySerpae TetraVerdict
Temperature68โ€“79ยฐF68โ€“82ยฐFโœ… 68โ€“79ยฐF
pH Range5.5โ€“7.55.0โ€“7.5โœ… 5.5โ€“7.5
Temperamentpeacefulsemiโš ๏ธ Monitor
Adult Size2.2 in1.6 inโœ… Similar
Min. Group6+10+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 Serpae 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

Serpae Tetra โ€” Hyphessobrycon eques

Julii Cory and Serpae Tetra compatibility โ€” Serpae Tetra

The Serpae Tetra is a popular freshwater fish known for its vibrant coloration and peaceful nature. It is well-suited for community tanks and can be a great addition to any aquarium. With its moderate activity level and easy care requirements, it is a suitable choice for beginners and experienced aquarists alike.

โ†’ Full Serpae Tetra care guide

Frequently Asked Questions

Can Julii Cory live with Serpae Tetra?

Yes, in a well-planned setup. Julii Cory and Serpae Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Julii Cory is peaceful and Serpae Tetra is semi, so give them room and cover rather than assuming they will ignore each 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 Serpae Tetra together?

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

What temperature suits both Julii Cory and Serpae Tetra?

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

Is a Julii Cory aggressive toward a Serpae Tetra?

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

Related Compatibility Guides

Tank Size for Julii Cory and Serpae 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.