Can oscars live with jack dempseys?
Verdict
Yes, with care
Yes, with care. Oscars and jack dempseys can share a tank, but watch one thing. Jack dempseys are aggressive. Oscars hold their own only in a big tank with places to hide.
What to watch
- Watch outJack dempseys are aggressive. Oscars hold their own only in a big tank with places to hide.
What works
- Both are fine at 74–81°F.
- pH 6.5–7.5 suits both.
Water side by side
Size to scale
Care at a glance
| Oscar | Jack Dempsey | |
|---|---|---|
| Temperature | 74–81 °F | 72–86 °F |
| pH | 6–8 | 6.5–7.5 |
| Adult size | 12.0 in | 10.0 in |
| Minimum tank | 75 gal | 55 gal |
| Temperament | Semi-aggressive | Aggressive |
| Swims at | Middle | Middle |
| Group | Alone or in pairs | Alone or in pairs |
| Diet | Carnivore | Carnivore |
Better tank mates for oscars
Common plecoYes
Clown loachYes
Black ghost knifeYes
BichirYes
Elephant nose fishYes
Chinese algae eaterYes
Better tank mates for jack dempseys
Questions
Can oscars live with jack dempseys?
Yes, with care. Oscars and jack dempseys can share a tank, but watch one thing. Jack dempseys are aggressive. Oscars hold their own only in a big tank with places to hide.
What temperature suits both oscars and jack dempseys?
74–81 °F. Oscars need 74–81 °F, jack dempseys need 72–86 °F.
What size tank do oscars and jack dempseys need together?
At least 75 gal, set by the oscar. Add space for each extra fish.