Can Crystal Red Shrimp live with Oscar?
Not recommended
Why
- Oscar hunts shrimp and is 16.0× the length of Crystal Red Shrimp — it will eat them.
- Oscar is not on the verified shrimp-safe list, so we will not recommend it over a breeding Crystal Red 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.
- Only a narrow water hardness overlap — keep both around 5–6 dGH.
Side-by-side
| Crystal Red Shrimp | Oscar | |
|---|---|---|
| Temperature | 68–76°F | 74–81°F |
| pH | 5.8–6.8 | 6–8 |
| Hardness (GH) | 3–6 dGH | 5–20 dGH |
| Adult size | 1" | 16" |
| Temperament | Peaceful | Aggressive |
| Min tank | 5 gal | 75 gal |
Together, plan on at least 75 gallons.
Compatible alternatives
Instead of Crystal Red 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
Instead of Oscar (to keep Crystal Red Shrimp):
- Pygmy Cory — 1", peaceful
- Black Molly — 4", peaceful
- Molly — 4", 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 Crystal Red Shrimp, Oscar →Everything compatible with Crystal Red Shrimp · …with Oscar