Can Opaline Gourami live with Flash Pleco (L204)?
Light caution
Why
- Only a narrow water hardness overlap — keep both around 6–7.5 dGH.
- Opaline Gourami is semi-aggressive — give the peaceful Flash Pleco (L204) plenty of space, cover and broken sight lines.
- Large size gap (Flash Pleco (L204) 20" vs Opaline Gourami 6") — watch that the smaller one gets its share at feeding time.
Sweet spot: both do well at 72–82°F and pH 6.5–7.6 — aim there.
Side-by-side
| Opaline Gourami | Flash Pleco (L204) | |
|---|---|---|
| Temperature | 72–82°F | 72–82°F |
| pH | 6–8.5 | 6.5–7.6 |
| Hardness (GH) | 5–20 dGH | 6–7.5 dGH |
| Adult size | 6" | 20" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 30 gal | 125 gal |
Together, plan on at least 125 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
- 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, Flash Pleco (L204) →Everything compatible with Opaline Gourami · …with Flash Pleco (L204)