Compatibility Overview
Black Ruby Barb and Percula Clownfish are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
| Factor | Black Ruby Barb | Percula Clownfish | Verdict |
|---|---|---|---|
| Temperature | 72–79°F | 75–82°F | ✅ 75–79°F |
| pH Range | 6.5–7.5 | 8.0–8.5 | ❌ No overlap |
| Temperament | aggressive | semi | ❌ Risk |
| Adult Size | 1.6 in | 3.1 in | ✅ Similar |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
Black Ruby Barb — Aquarium species
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.
→ Full Black Ruby Barb care guide
Percula Clownfish — Aquarium species
The Percula Clownfish, also known as the False Percula, is a popular beginner fish due to its hardiness and striking coloration. These fish are best kept in a saltwater tank with a minimum size of 30 gallons and compatible tankmates. They are peaceful, non-aggressive and do well in groups with other compatible species. Regular water quality maintenance is es
Frequently Asked Questions
Can Black Ruby Barb live with Percula Clownfish?
Generally not recommended. Black Ruby Barb and Percula Clownfish are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
What tank size do I need for Black Ruby Barb and Percula Clownfish together?
A minimum of 55 gallons is recommended for keeping Black Ruby Barb and Percula Clownfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Ruby Barb and Percula Clownfish?
75–79°F
Is a Black Ruby Barb aggressive toward a Percula Clownfish?
Black Ruby Barb is aggressive and Percula Clownfish is semi. These animals require different water types and cannot share one aquarium.
Related Compatibility Guides
Compatibility score breakdown
The overall score is weighted across water chemistry, behavior, adult size, swimming zone, and social needs. A score is a planning aid—not a guarantee for individual fish.
| Factor | Score |
|---|---|
| Temperature | 57/100 |
| Ph | 0/100 |
| Temperament | 25/100 |
| Adult Size | 100/100 |
| Swim Zone | 68/100 |
| Social Needs | 92/100 |
Tank size scenarios
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. |