Compatibility Overview
Clown Loach and Molly can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
| Factor | Clown Loach | Molly | Verdict |
|---|---|---|---|
| Temperature | 77–86°F | 72–82°F | ✅ 77–82°F |
| pH Range | 6.0–7.5 | 7.5–8.5 | ⚠️ 7.5–7.5 (narrow) |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 12 in | 4 in | ⚠️ 3.0× difference |
| Min. Group | 5+ | 3+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Clown Loach — Chromobotia macracanthus
Striking striped loach that grows very large. Peaceful with fish but will eat shrimp, snails and tiny fish.
Molly — Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water — sometimes slightly brackish. Prolific breeders; peaceful community fish.
Frequently Asked Questions
Can Clown Loach live with Molly?
With significant caution and a larger tank. Clown Loach and Molly can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Clown Loach and Molly together?
A minimum of 100 gallons is recommended for keeping Clown Loach and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Loach and Molly?
77–82°F
Is a Clown Loach aggressive toward a Molly?
Clown Loach is peaceful and Molly is peaceful. Narrow temperature overlap (77–82°F) — keeping the tank at exactly 78–81°F is needed for both species.