๐Ÿ  Fish Compatibility Guide

Can Black Phantom Tetra and Rosy Barb Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โš ๏ธ Use Caution โ€” Compatibility Score: 73/100
73/100 โ€” Use Caution

Black Phantom Tetra and Rosy Barb Compatibility Overview

Black Phantom Tetra and Rosy Barb can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.

Compatibility factors for Black Phantom Tetra and Rosy Barb
FactorBlack Phantom TetraRosy BarbVerdict
Temperature68โ€“82ยฐF61โ€“75ยฐFโœ… 68โ€“75ยฐF
pH Range5.0โ€“7.06.0โ€“8.0โœ… 6.0โ€“7.0
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size1.4 in3.9 inโš ๏ธ 2.8ร— difference
Min. Group8+8+See below
Min. Tank Size75 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

Black Phantom Tetra โ€” Hyphessobrycon megalopterus

Black Phantom Tetra and Rosy Barb compatibility โ€” Black Phantom Tetra

The Black Phantom Tetra is a popular freshwater fish known for its striking black and silver coloration. It is generally peaceful and can be kept in a community tank with other non-aggressive species. They require a well-maintained tank with a moderate water flow and a good cover of plants.

โ†’ Full Black Phantom Tetra care guide

Rosy Barb โ€” Pethia conchonius

Black Phantom Tetra and Rosy Barb compatibility โ€” Rosy Barb

The Rosy Barb is a popular freshwater fish known for its vibrant coloration and peaceful nature. It is well-suited for community tanks with other non-aggressive species. They require a well-maintained environment and can be sensitive to water quality fluctuations. With proper care, they can thrive and add a splash of color to your aquarium.

โ†’ Full Rosy Barb care guide

Frequently Asked Questions

Can Black Phantom Tetra live with Rosy Barb?

With significant caution and a larger tank. Black Phantom Tetra and Rosy Barb can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.

What tank size do I need for Black Phantom Tetra and Rosy Barb together?

A minimum of 75 gallons is recommended for keeping Black Phantom Tetra and Rosy Barb together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Black Phantom Tetra and Rosy Barb?

68โ€“75ยฐF โ€” inside Black Phantom Tetra's 68โ€“82ยฐF and Rosy Barb's 61โ€“75ยฐF.

Is a Black Phantom Tetra aggressive toward a Rosy Barb?

Black Phantom Tetra is peaceful and Rosy Barb is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Black Phantom Tetra and Rosy Barb

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

ScenarioTankWhen it applies
Minimum viable75 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community125 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup150 galBest when keeping larger schools or reducing territorial pressure.