Tank mate check
Can Discus and Oscar Fish live together?
Verdict: No
No. Discus 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.
- Aggressive species will harass or eat peaceful fish. Discus is rated peaceful, Oscar Fish aggressive.
- No temperature overlap (82-88°F vs 74-81°F).
- pH overlap 6-6.5.
- Oscar Fish sets the floor at 55 gallons on its own. Size up from there for both groups.
- Keep Discus in a group of 4 or more.
Side by side
| Discus | Oscar Fish | |
|---|---|---|
| Minimum tank | 50 gal | 55 gal |
| Temperature | 82-88°F (28-31°C) | 74-81°F (23-27°C) |
| pH | 5.5-6.5 | 6-8 |
| Temperament | Peaceful | Aggressive |
| Swim level | Middle | Middle |
| Group size | 4 or more together | 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.
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Other pairings
More Discus pairings
- Amano Shrimp no
- Angelfish with caution
- Betta Fish no
- Bristlenose Pleco no
- Cardinal Tetra no
- Cherry Shrimp no
- Corydoras Catfish no
- Dwarf Gourami no
- Goldfish no
- Guppy no
- Harlequin Rasbora no
- Kuhli Loach yes
- 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
More Oscar Fish pairings
- Amano Shrimp no
- Angelfish no
- Betta Fish no
- Bristlenose Pleco no
- Cardinal Tetra no
- Cherry Shrimp no
- Corydoras Catfish 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