Can Guppy live with Marbled Crayfish?
Caution — with care
Why
- Marbled Crayfish can grab Guppy while it sleeps — only fast mid/top-water fish are reasonably safe.
Sweet spot: both do well at 72–77°F and pH 6.8–7.8 — aim there.
Side-by-side
| Guppy | Marbled Crayfish | |
|---|---|---|
| Temperature | 72–82°F | 64–77°F |
| pH | 6.8–7.8 | 6.5–8 |
| Hardness (GH) | 8–20 dGH | 5–20 dGH |
| Adult size | 2" | 5" |
| Temperament | Peaceful | Aggressive |
| Min tank | 10 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
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Design a tank with Guppy, Marbled Crayfish →Everything compatible with Guppy · …with Marbled Crayfish