Compatibility Overview
Molly and Sparkling Gourami 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 55 gallons), dense planting, and close monitoring are essential.
| Factor | Molly | Sparkling Gourami | Verdict |
|---|---|---|---|
| Temperature | 72–82°F | 73–82°F | ✅ 73–82°F |
| pH Range | 7.5–8.5 | 6.5–7.5 | ⚠️ 7.5–7.5 (narrow) |
| Temperament | peaceful | semi | ⚠️ Monitor |
| Adult Size | 4 in | 2.0 in | ⚠️ 2.0× difference |
| Min. Group | 3+ | 1+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Molly — Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water — sometimes slightly brackish. Prolific breeders; peaceful community fish.
Sparkling Gourami — Aquarium species
The Sparkling Gourami is a popular freshwater fish known for its vibrant colors and peaceful nature. It is well-suited for beginners due to its easy care requirements and compatibility with a variety of tank mates. These gouramis thrive in a well-maintained tank with plenty of swimming space and gentle water flow. Providing a planted tank can enhance their n
Frequently Asked Questions
Can Molly live with Sparkling Gourami?
With significant caution and a larger tank. Molly and Sparkling Gourami 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 55 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Molly and Sparkling Gourami together?
A minimum of 55 gallons is recommended for keeping Molly and Sparkling Gourami together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Molly and Sparkling Gourami?
73–82°F
Is a Molly aggressive toward a Sparkling Gourami?
Molly is peaceful and Sparkling Gourami is semi. Their preferred pH ranges are difficult to reconcile.
Related Compatibility Guides
Compatibility score breakdown
The overall score is weighted across water chemistry, behavior, adult size, swimming zone, and social needs. A score is a planning aid—not a guarantee for individual fish.
| Factor | Score |
|---|---|
| Temperature | 100/100 |
| Ph | 0/100 |
| Temperament | 75/100 |
| Adult Size | 72/100 |
| Swim Zone | 68/100 |
| Social Needs | 92/100 |
Tank size scenarios
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 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. |