Can Oscar live with Dwarf Crayfish (CPO)?
Light caution
Why
- Dwarf Crayfish (CPO) can grab Oscar while it sleeps — only fast mid/top-water fish are reasonably safe.
Sweet spot: both do well at 74–79°F and pH 7–8 — aim there.
Side-by-side
| Oscar | Dwarf Crayfish (CPO) | |
|---|---|---|
| Temperature | 74–81°F | 65–79°F |
| pH | 6–8 | 7–8 |
| Hardness (GH) | 5–20 dGH | 6–15 dGH |
| Adult size | 16" | 1.75" |
| Temperament | Aggressive | Peaceful |
| Min tank | 75 gal | 10 gal |
Together, plan on at least 75 gallons.
How to make it work
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
Where to buy
- Oscar: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Dwarf Crayfish (CPO): 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 Oscar · …with Dwarf Crayfish (CPO)