Can Cajun Dwarf Crayfish live with Blue Phantom Pleco?
Caution — with care
Why
- Cajun Dwarf Crayfish hunts along the bottom and will catch the bottom-dwelling Blue Phantom Pleco, especially at night.
- Only a narrow temperature overlap — keep both around 75°F.
- Only a narrow water hardness overlap — keep both around 5.5–7 dGH.
Sweet spot: both do well at 75–75°F and pH 6.5–7.6 — aim there.
Side-by-side
| Cajun Dwarf Crayfish | Blue Phantom Pleco | |
|---|---|---|
| Temperature | 65–75°F | 75–82°F |
| pH | 6.5–8 | 6.5–7.6 |
| Hardness (GH) | 5–15 dGH | 5.5–7 dGH |
| Adult size | 1.5" | 7" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 55 gal |
Together, plan on at least 55 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 → Aquarium Co-Op An adjustable heater → Chewy
Where to buy
- Cajun Dwarf Crayfish: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Blue Phantom 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 Cajun Dwarf Crayfish · …with Blue Phantom Pleco