Can Black Molly live with Common Pleco?
Caution — with care
Why
- Large size gap (Black Molly 4" vs Common Pleco 24") — the bigger fish may eat the smaller one as they grow.
Sweet spot: both do well at 72–82°F and pH 7–8 — aim there.
Side-by-side
| Black Molly | Common Pleco | |
|---|---|---|
| Temperature | 72–82°F | 72–82°F |
| pH | 7–8.5 | 6–8 |
| Hardness (GH) | 12–30 dGH | 5–20 dGH |
| Adult size | 4" | 24" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 150 gal |
Together, plan on at least 150 gallons.
How to make it work
- Add only full-grown adults — never juveniles, which will be eaten.
Where to buy
- Black Molly: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Common Pleco: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
Live-animal shipping: add a heat pack below 50°F, expect weather holds above 90°F, and schedule delivery for a moderate week when someone can receive it promptly.
Build a full tank around this stocking →Everything compatible with Black Molly · …with Common Pleco