Compatibility Overview
Dwarf Gourami and Rainbow Shark 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 | Dwarf Gourami | Rainbow Shark | Verdict |
|---|---|---|---|
| Temperature | 72–82°F | 72–79°F | ✅ 72–79°F |
| pH Range | 6.0–7.5 | 6.5–7.5 | ✅ 6.5–7.5 |
| Temperament | semi | semi | ⚠️ Monitor |
| Adult Size | 3.5 in | 6 in | ✅ Similar |
| Min. Group | 1+ | 1+ | 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
Rainbow Shark — Epalzeorhynchos frenatum
Active bottom dweller that becomes territorial at maturity. One per tank; avoid other shark-like or bottom-dwelling species.
Frequently Asked Questions
Can Dwarf Gourami live with Rainbow Shark?
Yes, in a well-planned setup. Dwarf Gourami and Rainbow Shark 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 Dwarf Gourami and Rainbow Shark together?
A minimum of 55 gallons is recommended for keeping Dwarf Gourami and Rainbow Shark together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Dwarf Gourami and Rainbow Shark?
72–79°F
Is a Dwarf Gourami aggressive toward a Rainbow Shark?
Dwarf Gourami is semi and Rainbow Shark is semi. Both species can show some aggression; monitor closely and provide ample territory.