๐Ÿ  Fish Compatibility Guide

Can Denison Barb and Red Eye Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 84/100
84/100 โ€” Compatible

Denison Barb and Red Eye Tetra Compatibility Overview

Denison Barb and Red Eye Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Denison Barb is peaceful and Red Eye Tetra is semi, so give them room and cover rather than assuming they will ignore each other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.

Compatibility factors for Denison Barb and Red Eye Tetra
FactorDenison BarbRed Eye TetraVerdict
Temperature59โ€“77ยฐF72โ€“79ยฐFโœ… 72โ€“77ยฐF
pH Range6.5โ€“7.86.0โ€“8.0โœ… 6.5โ€“7.8
Temperamentpeacefulsemiโš ๏ธ Monitor
Adult Size4.3 in2.8 inโœ… Similar
Min. Group6+6+See below
Min. Tank Size55 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

Denison Barb โ€” Sahyadria denisonii

Denison Barb and Red Eye Tetra compatibility โ€” Denison Barb

The Denison Barb is a popular freshwater fish known for its vibrant coloration and peaceful nature. It is well-suited for community tanks with other peaceful species. These fish are relatively easy to care for and can thrive in a well-maintained aquarium. They require a spacious tank and should be kept in groups to prevent stress.

โ†’ Full Denison Barb care guide

Red Eye Tetra โ€” Moenkhausia sanctaefilomenae

Denison Barb and Red Eye Tetra compatibility โ€” Red Eye Tetra

The Red Eye Tetra is a popular freshwater fish known for its vibrant red eyes and sleek, silver body. They are generally peaceful and can be kept in a community tank with other non-aggressive species. Their moderate activity level makes them suitable for a variety of aquarium setups. With proper care, they can live up to 5 years.

โ†’ Full Red Eye Tetra care guide

Frequently Asked Questions

Can Denison Barb live with Red Eye Tetra?

Yes, in a well-planned setup. Denison Barb and Red Eye Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Denison Barb is peaceful and Red Eye Tetra is semi, so give them room and cover rather than assuming they will ignore each other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.

What tank size do I need for Denison Barb and Red Eye Tetra together?

A minimum of 55 gallons is recommended for keeping Denison Barb and Red Eye Tetra together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Denison Barb and Red Eye Tetra?

72โ€“77ยฐF โ€” inside Denison Barb's 59โ€“77ยฐF and Red Eye Tetra's 72โ€“79ยฐF.

Is a Denison Barb aggressive toward a Red Eye Tetra?

Denison Barb is peaceful and Red Eye Tetra is semi. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Denison Barb and Red Eye Tetra

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

ScenarioTankWhen it applies
Minimum viable64 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community90 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup125 galBest when keeping larger schools or reducing territorial pressure.