Can Jack Dempsey Live With Molly?
Jack Dempsey and Molly are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 72–82°F.
pH
✓ Compatible
Good pH overlap at 7.0–7.5.
Size
✓ Compatible
Compatible sizes (10" and 4").
Temperament
✗ Not Compatible
Jack Dempsey (aggressive) is not compatible with Molly (peaceful). Aggression or stress is very likely.
Swim Level
⚠ Use Caution
Both fish occupy the middle level and Jack Dempsey is territorial. Provide plenty of space and hiding spots.
Trait Conflict
✗ Not Compatible
Jack Dempsey is a predator and may eat Molly.
Trait Conflict
⚠ Use Caution
Molly may prefer brackish water conditions, which Jack Dempsey cannot tolerate long-term.
Tank Requirements
Minimum tank size for this combination: 65 gallons
| Parameter | Jack Dempsey | Molly |
|---|---|---|
| Temperature | 72–86°F | 72–82°F |
| pH | 6.5–7.5 | 7–8.5 |
| Max Size | 10" | 4" |
| Temperament | Aggressive | Peaceful |
| Swim Level | Middle | Middle |
| Min Tank | 55 gal | 20 gal |
Check More Combinations
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