Can Molly Live With Corydoras?
possible75/100
Key Takeaways
- Compatibility verdict: possible (75/100).
- Use at least a 25 gallon tank for this combination.
- Risk to manage: Water parameter mismatch.
Why This Pairing Fails
- Different water parameter preferences
- Mollies prefer harder, more alkaline water
- Risk to manage: Water parameter mismatch.
Minimum Viable Setup
| Tank | At least 25 gallons; more room is needed for active, territorial, or schooling fish. |
|---|---|
| Temperature | 24-26°C shared range |
| Groups | Molly: 3+; Corydoras: 6+. |
| Cover and space | Compromise on water parameters |
| Observation risk | Water parameter mismatch |
Compatibility Score Breakdown
Temperature Overlap
80
pH Overlap
60
Temperament
80
Size Risk
90
Swimming Level
95
Diet Conflict
85
Minimum Tank Size
Use at least a 25 gallon tank for this combination.
Setup Tips
- Compromise on water parameters
- Sand substrate for corydoras
Works Best If
- The tank is at least 25 gallons and fully cycled.
- Both species have hiding space and are introduced with close observation.
- Water temperature and pH stay inside the overlap shown in the score breakdown.
Main Risks
- Water parameter mismatch
Avoid This Pairing If
- The tank is smaller than the recommended minimum.
- Either species is already showing stress, hiding, or fin damage.
- You cannot separate the fish quickly if chasing, nipping, or bullying starts.
Frequently Asked Questions
Can mollies live with corydoras?
Possible, but they prefer different water parameters. Mollies like harder, more alkaline water.
Related Tools
Sources and Review Process
- Freshwater aquarium husbandry references for water quality, tank size, and stocking guidance.
- Species profiles and compatibility rules maintained in the AquaScience AI data set.
- Aquarium health guidance is educational and should not replace an aquatic veterinarian for severe symptoms.
Related Compatibility Guides
Molly Care Guide
Tank size, diet, water parameters, and common care notes for Molly.
Corydoras Care Guide
Tank size, diet, water parameters, and common care notes for Corydoras.
Betta Fish with Corydoras
Compatibility verdict: good (84/100).
Corydoras with Neon Tetra
Compatibility verdict: good (95/100).
Guppy with Corydoras
Compatibility verdict: good (90/100).
Corydoras with Cherry Shrimp
Compatibility verdict: good (90/100).