Can Opaline Gourami live with Black Kuhli Loach?
Light caution
Why
- Opaline Gourami is semi-aggressive — give the peaceful Black Kuhli Loach plenty of space, cover and broken sight lines.
Sweet spot: both do well at 73–82°F and pH 6–7 — aim there.
Side-by-side
| Opaline Gourami | Black Kuhli Loach | |
|---|---|---|
| Temperature | 72–82°F | 73–86°F |
| pH | 6–8.5 | 5.5–7 |
| Hardness (GH) | 5–20 dGH | 2–10 dGH |
| Adult size | 6" | 3" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 30 gal | 20 gal |
Together, plan on at least 30 gallons.
How to make it work
- Use a larger, well-decorated tank with sightline breaks, keep everyone well-fed, and add the calmer fish first.
Sort it with: GH remineraliser
Design the whole tank, not just the stocking
Skapelab plans a complete, buildable planted aquarium around your fish — a hand-illustrated layout, the exact plants and hardscape, a placement map, and a full equipment and shopping list. Free.
Design a tank with Opaline Gourami, Black Kuhli Loach →Everything compatible with Opaline Gourami · …with Black Kuhli Loach