Black Ruby Barb and Green Terror Cichlid Compatibility Overview
Black Ruby Barb and Green Terror Cichlid are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Black Ruby Barb | Green Terror Cichlid | Verdict |
|---|---|---|---|
| Temperature | 68β81Β°F | 68β75Β°F | β 68β75Β°F |
| pH Range | 5.5β7.5 | 6.5β8.0 | β 6.5β7.5 |
| Temperament | peaceful | aggressive | β Risk |
| Adult Size | 2.2 in | 11.8 in | β 5Γ difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | β | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Black Ruby Barb β 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.
β Full Black Ruby Barb care guide
Green Terror Cichlid β Andinoacara rivulatus
The Green Terror Cichlid is a popular choice for experienced aquarists due to its striking appearance and vibrant colors. They are known for their aggression and should be kept in a species-specific tank. Their tall, laterally compressed bodies and vivid coloration make them visually appealing but require careful handling due to their potentially aggressiveβ¦
Frequently Asked Questions
Can Black Ruby Barb live with Green Terror Cichlid?
Generally not recommended. Black Ruby Barb and Green Terror Cichlid are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Black Ruby Barb and Green Terror Cichlid together?
A minimum of 100 gallons is recommended for keeping Black Ruby Barb and Green Terror Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Ruby Barb and Green Terror Cichlid?
68β75Β°F β inside Black Ruby Barb's 68β81Β°F and Green Terror Cichlid's 68β75Β°F.
Is a Black Ruby Barb aggressive toward a Green Terror Cichlid?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Black Ruby Barb and Green Terror Cichlid
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 220 gal | Best when keeping larger schools or reducing territorial pressure. |