Can Guppy live with Oscar?
Not recommended
Why
- Oscar’s mouth is big enough to swallow Guppy (only 2" long) — it will be eaten.
- Oscar is aggressive and will attack the peaceful Guppy.
Side-by-side
| Guppy | Oscar | |
|---|---|---|
| Temperature | 72–82°F | 74–81°F |
| pH | 6.8–7.8 | 6–8 |
| Hardness (GH) | 8–20 dGH | 5–20 dGH |
| Adult size | 2" | 16" |
| Temperament | Peaceful | Aggressive |
| Min tank | 10 gal | 75 gal |
Together, plan on at least 75 gallons.
Compatible alternatives
Instead of Guppy (to keep Oscar):
- Oscar — 16", aggressive
- Kissing Gourami — 12", semi-aggressive
- Typhoon Pleco — 12", semi-aggressive
Instead of Oscar (to keep Guppy):
- Kissing Gourami — 12", semi-aggressive
- Black Molly — 4", peaceful
- Molly — 4", peaceful
Design the whole tank, not just the stocking
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Design a tank with Guppy, Oscar →Everything compatible with Guppy · …with Oscar