Compatibility Overview
Discus and Dwarf 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 100 gallons), dense planting, and close monitoring are essential.
| Factor | Discus | Dwarf Gourami | Verdict |
|---|---|---|---|
| Temperature | 82–88°F | 72–82°F | ⚠️ 82–82°F (narrow) |
| pH Range | 5.0–7.0 | 6.0–7.5 | ✅ 6.0–7.0 |
| Temperament | semi | semi | ⚠️ Monitor |
| Adult Size | 8 in | 3.5 in | ⚠️ 2.3× difference |
| Min. Group | 5+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Discus — Symphysodon spp.
The 'king of the aquarium' — beautiful but demanding. Requires very warm, soft, acidic water that excludes most community fish.
Dwarf Gourami — Trichogaster lalius
Colourful labyrinth fish that is generally peaceful but can be territorial toward similar species. Susceptible to Dwarf Gourami Iridovirus.
Frequently Asked Questions
Can Discus live with Dwarf Gourami?
With significant caution and a larger tank. Discus and Dwarf 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 100 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Discus and Dwarf Gourami together?
A minimum of 100 gallons is recommended for keeping Discus and Dwarf Gourami together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Discus and Dwarf Gourami?
82–82°F (narrow)
Is a Discus aggressive toward a Dwarf Gourami?
Discus is semi and Dwarf Gourami is semi. Minimal temperature overlap (82–82°F) — difficult to satisfy both species simultaneously.