Can Koi Angelfish live with Cardinal Shrimp?
Not recommended
Why
- Koi Angelfish is 7.5× the length of Cardinal Shrimp — easily mouth-sized, and anything that fits in the mouth is a predator.
- Koi Angelfish 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.
- Only a narrow pH overlap — keep both around 7.5–7.5.
Side-by-side
| Koi Angelfish | Cardinal Shrimp | |
|---|---|---|
| Temperature | 78–84°F | 79–84°F |
| pH | 6–7.5 | 7.5–8.5 |
| Hardness (GH) | 3–12 dGH | 8–18 dGH |
| Adult size | 6" | 0.8" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 15 gal |
Together, plan on at least 30 gallons.
Compatible alternatives
Instead of Koi Angelfish (to keep Cardinal Shrimp):
- Croaking Gourami — 3", peaceful
- Black Neon Tetra — 1.5", peaceful
- Harlequin Rasbora — 1.75", peaceful buy at The Shrimp Farm · The Shrimp Farm live-arrival guarantee
Instead of Cardinal Shrimp (to keep Koi Angelfish):
- Black Rose Shrimp — 1.5", peaceful buy at The Shrimp Farm · The Shrimp Farm live-arrival guarantee
- Carbon Rili Shrimp — 1.5", peaceful buy at The Shrimp Farm · The Shrimp Farm live-arrival guarantee
- Painted Fire Red Shrimp — 1.5", peaceful buy at The Shrimp Farm · The Shrimp Farm live-arrival guarantee
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 Koi Angelfish, Cardinal Shrimp →Everything compatible with Koi Angelfish · …with Cardinal Shrimp