Compatibility Overview
Black Phantom Tetra and Clown Loach 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 Phantom Tetra | Clown Loach | Verdict |
|---|---|---|---|
| Temperature | 72–82°F | 77–86°F | ✅ 77–82°F |
| pH Range | 6.0–7.0 | 6.0–7.5 | ✅ 6.0–7.0 |
| Temperament | semi | peaceful | ⚠️ Monitor |
| Adult Size | 2.0 in | 12 in | ❌ 6× difference |
| Min. Group | 1+ | 5+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
Black Phantom Tetra — Aquarium species
The Black Phantom Tetra is a popular freshwater fish known for its striking black and silver coloration. It is generally peaceful and can be kept in a community tank with other non-aggressive species. They require a well-maintained tank with a moderate water flow and a good cover of plants. These tetras are suitable for beginners due to their hardiness and e
→ Full Black Phantom Tetra care guide
Clown Loach — Chromobotia macracanthus
Striking striped loach that grows very large. Peaceful with fish but will eat shrimp, snails and tiny fish.
Frequently Asked Questions
Can Black Phantom Tetra live with Clown Loach?
Generally not recommended. Black Phantom Tetra and Clown Loach 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 Phantom Tetra and Clown Loach together?
A minimum of 100 gallons is recommended for keeping Black Phantom Tetra and Clown Loach together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Phantom Tetra and Clown Loach?
77–82°F
Is a Black Phantom Tetra aggressive toward a Clown Loach?
Black Phantom Tetra is semi and Clown Loach is peaceful. The adult size gap creates a meaningful predation risk.
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 | 56/100 |
| Ph | 100/100 |
| Temperament | 75/100 |
| Adult Size | 8/100 |
| Swim Zone | 92/100 |
| 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 | 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. |