Can Pygmy Cory live with Red Claw Crab?
Caution — with care
Why
- Red Claw Crab can grab Pygmy Cory while it sleeps — only fast mid/top-water fish are reasonably safe.
- No overlapping water hardness: Pygmy Cory wants 2–12 dGH but Red Claw Crab wants 15–25 dGH.
- Only a narrow pH overlap — keep both around 7.5–7.5.
Sweet spot: both do well at 75–79°F and pH 7.5–7.5 — aim there.
Side-by-side
| Pygmy Cory | Red Claw Crab | |
|---|---|---|
| Temperature | 72–79°F | 75–82°F |
| pH | 6–7.5 | 7.5–8.5 |
| Hardness (GH) | 2–12 dGH | 15–25 dGH |
| Adult size | 1" | 2.5" |
| Temperament | Peaceful | Semi-aggressive |
| Min tank | 10 gal | 15 gal |
Together, plan on at least 15 gallons.
How to make it work
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser
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Design a tank with Pygmy Cory, Red Claw Crab →Everything compatible with Pygmy Cory · …with Red Claw Crab