Tank mate check
Can Discus and Molly Fish live together?
Verdict: No
No. Discus and Molly 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.
- Both species are peaceful. Discus is rated peaceful, Molly Fish peaceful.
- Temperature overlap 82°F is too narrow.
- No pH overlap (5.5-6.5 vs 7-8.5).
- Discus sets the floor at 50 gallons on its own. Size up from there for both groups.
- Keep Discus in a group of 4 or more.
- Keep Molly Fish in a group of 3 or more.
Side by side
| Discus | Molly Fish | |
|---|---|---|
| Minimum tank | 50 gal | 10 gal |
| Temperature | 82-88°F (28-31°C) | 70-82°F (21-28°C) |
| pH | 5.5-6.5 | 7-8.5 |
| Temperament | Peaceful | Peaceful |
| Swim level | Middle | Top |
| Group size | 4 or more together | 3 or more together |
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 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
- Mystery Snail no
- Neon Tetra no
- Nerite Snail no
- Oscar Fish no
- Otocinclus no
- Platy no
- Plecostomus no
- Rummy Nose Tetra no
- Siamese Algae Eater no
More Molly Fish pairings
- Amano Shrimp yes
- Angelfish with caution
- Betta Fish with caution
- Bristlenose Pleco yes
- Cardinal Tetra no
- Cherry Shrimp yes
- Corydoras Catfish yes
- Dwarf Gourami with caution
- Goldfish yes
- Guppy yes
- Harlequin Rasbora yes
- Kuhli Loach with caution
- Mystery Snail yes
- Neon Tetra with caution
- Nerite Snail yes
- Oscar Fish no
- Otocinclus yes
- Platy yes
- Plecostomus yes
- Rummy Nose Tetra with caution
- Siamese Algae Eater yes