Black Ruby Barb and Flame Angelfish Compatibility Overview
Black Ruby Barb and Flame Angelfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Black Ruby Barb wants 5.5โ7.5 and Flame Angelfish wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Black Ruby Barb | Flame Angelfish | Verdict |
|---|---|---|---|
| Temperature | 68โ81ยฐF | 72โ82ยฐF | โ 72โ81ยฐF |
| pH Range | 5.5โ7.5 | 8.1โ8.4 | โ No overlap |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 2.2 in | 4.0 in | โ Similar |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Black Ruby Barb โ Pethia nigrofasciata
The Black Ruby Barb is a vibrant, active species suitable for beginners. It requires a spacious tank and a school of its own kind to thrive. Its striking colors and lively nature make it a popular choice.
โ Full Black Ruby Barb care guide
Flame Angelfish โ Centropyge loricula
The Flame Angelfish is a popular choice for saltwater aquariums due to its vibrant coloration and peaceful nature. It requires a spacious tank with plenty of swimming space and a stable water environment. With proper care, it can thrive in a community tank with compatible species.
Frequently Asked Questions
Can Black Ruby Barb live with Flame Angelfish?
Generally not recommended. Black Ruby Barb and Flame Angelfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Black Ruby Barb wants 5.5โ7.5 and Flame Angelfish wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Black Ruby Barb and Flame Angelfish together?
A minimum of 55 gallons is recommended for keeping Black Ruby Barb and Flame Angelfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Ruby Barb and Flame Angelfish?
72โ81ยฐF โ inside Black Ruby Barb's 68โ81ยฐF and Flame Angelfish's 72โ82ยฐF.
Is a Black Ruby Barb aggressive toward a Flame Angelfish?
Black Ruby Barb is peaceful and Flame Angelfish is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Black Ruby Barb and Flame Angelfish
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |