Compatibility Overview
Cherry Barb and Molly 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 | Cherry Barb | Molly | Verdict |
|---|---|---|---|
| Temperature | 73–81°F | 72–82°F | ✅ 73–81°F |
| pH Range | 6.0–8.0 | 7.5–8.5 | ⚠️ 7.5–8.0 (narrow) |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 2 in | 4 in | ⚠️ 2.0× difference |
| Min. Group | 6+ | 3+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Cherry Barb — Puntius titteya
Unlike most barbs, cherry barbs are peaceful schooling fish safe with bettas and nano species. Males turn vivid red when in breeding condition.
Molly — Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water — sometimes slightly brackish. Prolific breeders; peaceful community fish.
Frequently Asked Questions
Can Cherry Barb live with Molly?
Yes, in a well-planned setup. Cherry Barb and Molly 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 Cherry Barb and Molly together?
A minimum of 55 gallons is recommended for keeping Cherry Barb and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cherry Barb and Molly?
73–81°F
Is a Cherry Barb aggressive toward a Molly?
Cherry Barb is peaceful and Molly is peaceful. Limited pH overlap (7.5–8.0) — maintain pH carefully within this narrow window.