Angelfish and Clown Loach Compatibility
Angelfish and Clown Loach carry a clear risk: temperature ranges overlap at 76–84°F, yet temperament or size differences mean close supervision is essential. Plan on at least 75 gallons. Individual fish vary — observe behaviour during introduction.
Angelfish vs Clown Loach at a glance
| Aspect | Angelfish | Clown Loach |
|---|---|---|
| Adult size | ~6 in | ~12 in |
| Minimum tank | 30 gal | 75 gal |
| Temperature | 76–84°F | 75–86°F |
| pH | 6–7.5 | 6–7.5 |
| Temperament | semi-aggressive | peaceful |
| Swimming zone | middle | bottom |
| Group size | 2+ | 5+ |
| Care level | moderate | moderate |
Overlap in temperature: 76–84°F. Overlap in pH: 6–7.5.
Why this verdict
- Temperature: Shared range of 76–84°F.
- Water parameters: Shared pH range of 6–7.5.
- Temperament: Angelfish can be territorial; provide plants, sight breaks, and space.
- Adult size: Comparable adult sizes (~6" and ~12").
- Swimming zone: Complementary layers (middle + bottom) reduce competition for space.
- Schooling: Group sizes matter: Angelfish: keep at least 2; Clown Loach: keep at least 5.
- Tank size: Plan for at least 75 gallons to satisfy both species.
Main risks
- Occasional chasing or fin nipping is possible.
Recommended tank
Plan on 75 gallons or larger for this pair. Suitable sizes: 75 gallon, 90 gallon, 100 gallon.
Group sizes: Angelfish: keep at least 2; Clown Loach: keep at least 5.
Sources
- FishBase — Scientific Database · Primary / scientific · https://www.fishbase.se/
- SeriouslyFish — Specialist Publication · High authority · https://www.seriouslyfish.com/
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
- FishBase — Scientific Database · Primary / scientific · https://www.fishbase.se/
- SeriouslyFish — Specialist Publication · High authority · https://www.seriouslyfish.com/
- Practical Fishkeeping — Specialist Publication · Moderate authority · https://www.practicalfishkeeping.co.uk/
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
Compatibility verdicts are planning guidance, not guarantees — individual fish vary. Rule version 1.1 · Data reviewed: .
Frequently asked questions
Can Angelfish and Clown Loach live together?
Our verdict is “Risky”. Angelfish and Clown Loach carry a clear risk: temperature ranges overlap at 76–84°F, yet temperament or size differences mean close supervision is essential. Plan on at least 75 gallons. Individual fish vary — observe behaviour during introduction.
What tank size do Angelfish and Clown Loach need?
Plan for at least 75 gallons so both species have their minimum space — Angelfish needs 30+ gal and Clown Loach needs 75+ gal. Adding length and cover reduces stress further.
What temperature do Angelfish and Clown Loach share?
Their comfortable ranges overlap at 76–84°F. Hold the tank near the middle of that band and avoid the extremes of either species' range.
What are the main risks keeping Angelfish with Clown Loach?
Occasional chasing or fin nipping is possible.
How many Angelfish and Clown Loach should I keep?
Angelfish: keep at least 2; Clown Loach: keep at least 5. Group sizes matter for shoaling fish — too few and they become stressed and nippy.
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