Can Royal Pleco live with Sailfin Molly?
Light caution
Why
- Only a narrow pH overlap — keep both around 7.5–7.5.
- Only a narrow water hardness overlap — keep both around 12–12 dGH.
- Large size gap (Royal Pleco 17" vs Sailfin Molly 5") — watch that the smaller one gets its share at feeding time.
Sweet spot: both do well at 73–82°F and pH 7.5–7.5 — aim there.
Side-by-side
| Royal Pleco | Sailfin Molly | |
|---|---|---|
| Temperature | 73–82°F | 68–82°F |
| pH | 6.5–7.5 | 7.5–8.5 |
| Hardness (GH) | 4–12 dGH | 12–30 dGH |
| Adult size | 17" | 5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 120 gal | 30 gal |
Together, plan on at least 120 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser
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Design a tank with Royal Pleco, Sailfin Molly →Everything compatible with Royal Pleco · …with Sailfin Molly