Mollies and Oscars, side by side
| Molly | Oscar | |
|---|---|---|
| Adult size | 3.9 in10 cm | 11.8 in30 cm |
| Smallest tank | 30 gal114 L | 75 gal284 L |
| Keep | 3 or more | One or more |
| Temperature | 73–82 °F23–28 °C | 73–81 °F23–27 °C |
| pH | 7.5–8.5 | 6–8 |
| Temperament | Peaceful | Aggressive |
| Swims | In the middle | In the middle |
Why it does not work
Oscar is aggressive and will bully or kill peaceful fish such as molly.
Better tank mates for mollies
Better tank mates for oscars
Questions and answers
Can mollies and oscars live in the same tank?
No, not a good match. Oscar is aggressive and will bully or kill peaceful fish such as molly.
What temperature suits mollies and oscars?
73–81 °F (23–27 °C) suits both.
More pairs
- Mollies and bettas
- Mollies and guppies
- Mollies and neon tetras
- Mollies and fancy goldfish
- Mollies and angelfish
- Oscars and bronze corydoras
- Oscars and platies
- Oscars and tiger barbs
- Oscars and dwarf gouramis
- All pairs
Based on each species' adult size, water range and temperament (Seriously Fish, FishBase) and the rules of our stocking calculator. Individual fish differ: this is a guide, not a guarantee.