Can Marbled Crayfish live with Sailfin Molly?
Caution — with care
Why
- Marbled Crayfish can grab Sailfin Molly while it sleeps — only fast mid/top-water fish are reasonably safe.
Sweet spot: both do well at 68–77°F and pH 7.5–8 — aim there.
Side-by-side
| Marbled Crayfish | Sailfin Molly | |
|---|---|---|
| Temperature | 64–77°F | 68–82°F |
| pH | 6.5–8 | 7.5–8.5 |
| Hardness (GH) | 5–20 dGH | 12–30 dGH |
| Adult size | 5" | 5" |
| Temperament | Aggressive | Peaceful |
| Min tank | 30 gal | 30 gal |
Together, plan on at least 30 gallons.
How to make it work
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
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 Marbled Crayfish, Sailfin Molly →Everything compatible with Marbled Crayfish · …with Sailfin Molly