Can Koi Angelfish live with Neon Blue Rasbora?
Not recommended
Why
- Koi Angelfish’s mouth is big enough to swallow Neon Blue Rasbora (only 0.8" long) — it will be eaten.
- Only a narrow temperature overlap — keep both around 78–79°F.
- Only a narrow water hardness overlap — keep both around 3–5 dGH.
Side-by-side
| Koi Angelfish | Neon Blue Rasbora | |
|---|---|---|
| Temperature | 78–84°F | 72–79°F |
| pH | 6–7.5 | 4.5–6.5 |
| Hardness (GH) | 3–12 dGH | 1–5 dGH |
| Adult size | 6" | 0.8" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 10 gal |
Together, plan on at least 30 gallons.
Compatible alternatives
Instead of Koi Angelfish (to keep Neon Blue Rasbora):
- Croaking Gourami — 3", peaceful
- Gold Gourami — 6", semi-aggressive
- Brilliant Rasbora — 4", peaceful
Instead of Neon Blue Rasbora (to keep Koi Angelfish):
- Lambchop Rasbora — 1.25", peaceful
- Croaking Gourami — 3", peaceful
- Brilliant Rasbora — 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 Koi Angelfish, Neon Blue Rasbora →Everything compatible with Koi Angelfish · …with Neon Blue Rasbora