Compatibility Overview
Chili Rasbora and Kuhli Loach can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Chili Rasbora | Kuhli Loach | Verdict |
|---|---|---|---|
| Temperature | 68–82°F | 73–82°F | ✅ 73–82°F |
| pH Range | 4.0–7.0 | 5.5–7.0 | ✅ 5.5–7.0 |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 0.8 in | 3.5 in | ❌ 4× difference |
| Min. Group | 8+ | 3+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Chili Rasbora — Boraras brigittae
Vivid red nano fish from Borneo blackwater habitats. Extremely small — only safe with fish too small to swallow them.
→ Full Chili Rasbora care guide
Kuhli Loach — Pangio kuhlii
Eel-like bottom dwellers that are peaceful with all non-aggressive fish. Nocturnal and reclusive; need caves and soft substrate.
Frequently Asked Questions
Can Chili Rasbora live with Kuhli Loach?
Yes, in a well-planned setup. Chili Rasbora and Kuhli Loach can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Chili Rasbora and Kuhli Loach together?
A minimum of 55 gallons is recommended for keeping Chili Rasbora and Kuhli Loach together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Chili Rasbora and Kuhli Loach?
73–82°F
Is a Chili Rasbora aggressive toward a Kuhli Loach?
Chili Rasbora is peaceful and Kuhli Loach is peaceful. Significant size difference (3.5 in vs 0.8 in) — the larger species may out-compete for food or intimidate the smaller.