Black Ruby Barb and Diamond Tetra Compatibility Overview
Black Ruby Barb and Diamond Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Black Ruby Barb | Diamond Tetra | Verdict |
|---|---|---|---|
| Temperature | 68โ81ยฐF | 75โ82ยฐF | โ 75โ81ยฐF |
| pH Range | 5.5โ7.5 | 5.5โ7.0 | โ 5.5โ7.0 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 2.2 in | 2.4 in | โ Similar |
| Min. Group | 6+ | 6+ | See below |
| Min. Tank Size | 20 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
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
Diamond Tetra โ Moenkhausia pittieri
The Diamond Tetra is a popular freshwater fish known for its vibrant colors and peaceful nature. It is well-suited for community tanks and can thrive in a variety of water conditions. With a moderate activity level and a preference for schools, this species is a great addition to any beginner or intermediate aquarist's tank.
Frequently Asked Questions
Can Black Ruby Barb live with Diamond Tetra?
Yes, in a well-planned setup. Black Ruby Barb and Diamond Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the 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 Black Ruby Barb and Diamond Tetra together?
A minimum of 20 gallons is recommended for keeping Black Ruby Barb and Diamond Tetra together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Ruby Barb and Diamond Tetra?
75โ81ยฐF โ inside Black Ruby Barb's 68โ81ยฐF and Diamond Tetra's 75โ82ยฐF.
Is a Black Ruby Barb aggressive toward a Diamond Tetra?
Black Ruby Barb is peaceful and Diamond Tetra is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Black Ruby Barb and Diamond Tetra
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 20 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 29 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 55 gal | Best when keeping larger schools or reducing territorial pressure. |