Can Molly live with Oscar?
Not recommended
Why
- Oscar’s mouth is big enough to swallow Molly (only 4" long) — it will be eaten.
- Oscar is aggressive and will attack the peaceful Molly.
Side-by-side
| Molly | Oscar | |
|---|---|---|
| Temperature | 72–82°F | 74–81°F |
| pH | 7–8.5 | 6–8 |
| Hardness (GH) | 12–30 dGH | 5–20 dGH |
| Adult size | 4" | 16" |
| Temperament | Peaceful | Aggressive |
| Min tank | 30 gal | 75 gal |
Together, plan on at least 75 gallons.
Compatible alternatives
Instead of Molly (to keep Oscar):
- Oscar — 16", aggressive
- Kissing Gourami — 12", semi-aggressive
- Giant Gourami — 24", semi-aggressive
Instead of Oscar (to keep Molly):
- Kissing Gourami — 12", semi-aggressive
- Yucatan Molly — 6", peaceful
- Sailfin Molly — 5", peaceful
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Design a tank with Molly, Oscar →Everything compatible with Molly · …with Oscar