Tank mate check
Can Betta Fish and Oscar Fish live together?
Verdict: No
No. Betta Fish and Oscar Fish fail at least one check below, so keep them in separate tanks.
Why
The same temperament, water and known-conflict checks the MyAquaLog compatibility tool runs.
- High risk of conflict between semi-aggressive and aggressive species. Betta Fish is rated semi-aggressive, Oscar Fish aggressive.
- Temperature overlap 76-81°F.
- pH overlap 6.5-7.5.
- Oscar Fish sets the floor at 55 gallons on its own. Size up from there for both groups.
Side by side
| Betta Fish | Oscar Fish | |
|---|---|---|
| Minimum tank | 5 gal | 55 gal |
| Temperature | 76-82°F (24-28°C) | 74-81°F (23-27°C) |
| pH | 6.5-7.5 | 6-8 |
| Temperament | Semi-aggressive | Aggressive |
| Swim level | Top | Middle |
| Group size | Can be kept singly | Can be kept singly |
Check your own tank
This page compares two species on their own. Your full stock list, tank size and bioload change the answer, so log your own tank.
Start a tank logStocking guide
No account needed, it saves on this device.
Other pairings
More Betta Fish pairings
- Amano Shrimp with caution
- Angelfish no
- Bristlenose Pleco with caution
- Cardinal Tetra with caution
- Cherry Shrimp with caution
- Corydoras Catfish with caution
- Discus no
- Dwarf Gourami no
- Goldfish no
- Guppy no
- Harlequin Rasbora with caution
- Kuhli Loach with caution
- Molly Fish with caution
- Mystery Snail with caution
- Neon Tetra with caution
- Nerite Snail with caution
- Otocinclus with caution
- Platy with caution
- Plecostomus with caution
- Rummy Nose Tetra with caution
- Siamese Algae Eater with caution
More Oscar Fish pairings
- Amano Shrimp no
- Angelfish no
- Bristlenose Pleco no
- Cardinal Tetra no
- Cherry Shrimp no
- Corydoras Catfish no
- Discus no
- Dwarf Gourami no
- Goldfish no
- Guppy no
- Harlequin Rasbora no
- Kuhli Loach no
- Molly Fish no
- Mystery Snail no
- Neon Tetra no
- Nerite Snail no
- Otocinclus no
- Platy no
- Plecostomus no
- Rummy Nose Tetra no
- Siamese Algae Eater no