Angelfish and Black Ruby Barb Compatibility Overview
Angelfish and Black Ruby Barb can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Angelfish is semi and Black Ruby Barb is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 75-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Angelfish | Black Ruby Barb | Verdict |
|---|---|---|---|
| Temperature | 74โ84ยฐF | 68โ81ยฐF | โ 74โ81ยฐF |
| pH Range | 6.0โ7.5 | 5.5โ7.5 | โ 6.0โ7.5 |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 6 in | 2.2 in | โ ๏ธ 2.7ร difference |
| Min. Group | 1+ | 6+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Angelfish โ Pterophyllum scalare
Elegant South American cichlids with long flowing fins. Generally peaceful but territorial when breeding and will eat very small fish.
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.
Frequently Asked Questions
Can Angelfish live with Black Ruby Barb?
Yes, in a well-planned setup. Angelfish and Black Ruby Barb can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Angelfish is semi and Black Ruby Barb is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 75-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Angelfish and Black Ruby Barb together?
A minimum of 75 gallons is recommended for keeping Angelfish and Black Ruby Barb together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Angelfish and Black Ruby Barb?
74โ81ยฐF โ inside Angelfish's 74โ84ยฐF and Black Ruby Barb's 68โ81ยฐF.
Is a Angelfish aggressive toward a Black Ruby Barb?
Angelfish is semi and Black Ruby Barb is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Angelfish and Black Ruby Barb
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |