Compatibility Overview
Dwarf Gourami 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 55 gallons), dense planting, and close monitoring are essential.
| Factor | Dwarf Gourami | Molly | Verdict |
|---|---|---|---|
| Temperature | 72–82°F | 72–82°F | ✅ 72–82°F |
| pH Range | 6.0–7.5 | 7.5–8.5 | ⚠️ 7.5–7.5 (narrow) |
| Temperament | semi | peaceful | ⚠️ Monitor |
| Adult Size | 3.5 in | 4 in | ✅ Similar |
| Min. Group | 1+ | 3+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Dwarf Gourami — Trichogaster lalius
Colourful labyrinth fish that is generally peaceful but can be territorial toward similar species. Susceptible to Dwarf Gourami Iridovirus.
→ Full Dwarf Gourami care guide
Molly — Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water — sometimes slightly brackish. Prolific breeders; peaceful community fish.
Frequently Asked Questions
Can Dwarf Gourami live with Molly?
With significant caution and a larger tank. Dwarf Gourami 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 55 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Dwarf Gourami and Molly together?
A minimum of 55 gallons is recommended for keeping Dwarf Gourami and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Dwarf Gourami and Molly?
72–82°F
Is a Dwarf Gourami aggressive toward a Molly?
Dwarf Gourami is semi and Molly is peaceful. pH ranges barely or do not overlap: Dwarf Gourami prefers 6.0–7.5; Molly prefers 7.5–8.5.