Denison Barb and Molly Compatibility Overview
Denison Barb and Molly can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
| Factor | Denison Barb | Molly | Verdict |
|---|---|---|---|
| Temperature | 59โ77ยฐF | 72โ82ยฐF | โ 72โ77ยฐF |
| pH Range | 6.5โ7.8 | 7.5โ8.5 | โ ๏ธ 7.5โ7.8 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 4.3 in | 4 in | โ Similar |
| Min. Group | 6+ | 3+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Denison Barb โ Sahyadria denisonii
The Denison Barb is a popular freshwater fish known for its vibrant coloration and peaceful nature. It is well-suited for community tanks with other peaceful species. These fish are relatively easy to care for and can thrive in a well-maintained aquarium. They require a spacious tank and should be kept in groups to prevent stress.
โ Full Denison Barb 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 Denison Barb live with Molly?
With significant caution and a larger tank. Denison Barb and Molly can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Denison Barb and Molly together?
A minimum of 55 gallons is recommended for keeping Denison Barb and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Denison Barb and Molly?
72โ77ยฐF โ inside Denison Barb's 59โ77ยฐF and Molly's 72โ82ยฐF.
Is a Denison Barb aggressive toward a Molly?
Denison Barb is peaceful and Molly is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Denison Barb and Molly
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 64 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 90 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |