Chili Rasbora and Molly Compatibility Overview
Chili Rasbora and Molly can potentially coexist, but the combination requires careful attention. Their pH ranges do not meet: Chili Rasbora wants 4.0โ7.0 and Molly wants 7.5โ8.5. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Chili Rasbora | Molly | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 4.0โ7.0 | 7.5โ8.5 | โ No overlap |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 0.8 in | 4 in | โ 5ร difference |
| Min. Group | 8+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Chili Rasbora โ Boraras brigittae
Vivid red nano fish from Borneo blackwater habitats. Extremely small โ only safe with fish too small to swallow them.
โ Full Chili Rasbora care guide
Molly โ Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water โ sometimes slightly brackish. Prolific breeders; peaceful community fish.
Frequently Asked Questions
Can Chili Rasbora live with Molly?
With significant caution and a larger tank. Chili Rasbora and Molly can potentially coexist, but the combination requires careful attention. Their pH ranges do not meet: Chili Rasbora wants 4.0โ7.0 and Molly wants 7.5โ8.5. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Chili Rasbora and Molly together?
A minimum of 75 gallons is recommended for keeping Chili Rasbora and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Chili Rasbora and Molly?
72โ82ยฐF โ inside Chili Rasbora's 68โ82ยฐF and Molly's 72โ82ยฐF.
Is a Chili Rasbora aggressive toward a Molly?
Chili Rasbora is peaceful and Molly is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Chili Rasbora and Molly
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |