Can Oscar live with Cardinal Shrimp?
Not recommended
Why
- Oscar hunts shrimp and is 20.0× the length of Cardinal Shrimp — it will eat them.
- Oscar is not on the verified shrimp-safe list, so we will not recommend it over a breeding Cardinal Shrimp colony. It may well be fine — it simply has not been confirmed by a source, and an unverified guess is not worth the colony.
Side-by-side
| Oscar | Cardinal Shrimp | |
|---|---|---|
| Temperature | 74–81°F | 79–84°F |
| pH | 6–8 | 7.5–8.5 |
| Hardness (GH) | 5–20 dGH | 8–18 dGH |
| Adult size | 16" | 0.8" |
| Temperament | Aggressive | Peaceful |
| Min tank | 75 gal | 15 gal |
Together, plan on at least 75 gallons.
Compatible alternatives
Instead of Oscar (to keep Cardinal Shrimp):
- Thick-lipped Gourami — 3.5", peaceful
- Noble Gourami — 3", peaceful
- Betta (Siamese Fighting Fish) — 2.5", semi-aggressive
Instead of Cardinal Shrimp (to keep Oscar):
- Vampire Shrimp — 6", peaceful buy at The Shrimp Farm · The Shrimp Farm live-arrival guarantee
- Assassin Snail — 1", peaceful
- Batik Nerite Snail — 0.6", peaceful
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 Oscar, Cardinal Shrimp →Everything compatible with Oscar · …with Cardinal Shrimp