Can Molly Live With Jack Dempsey Cichlid?
❌Not Compatible
Jack Dempsey Cichlid is aggressive and will likely attack or stress tank mates.
Ad
Parameter Comparison
| Parameter | Molly | Jack Dempsey Cichlid | Overlap |
|---|---|---|---|
| Temperature | 72–82°F | 72–86°F | 72–82°F ✓ |
| pH Range | 7–8.5 | 6.5–8 | 7–8 ✓ |
| Temperament | peaceful | aggressive | Aggression risk ✗ |
| Max Size | 4.5" | 10" | Similar ✓ |
| Min Tank Size | 20 gal | 55 gal | 55 gal minimum together |
| Diet | Omnivore | Carnivore | — |
| Care Level | beginner | intermediate | — |
Species Profiles
Molly
Poecilia sphenops
beginnerpeaceful20+ gal
Mollies are versatile livebearers that come in many varieties including black, dalmatian, balloon, and sailfin. They prefer hard, alkaline water and can even tolerate brackish conditions. They are active, personable fish that breed easily.
Full care guide →Jack Dempsey Cichlid
Rocio octofasciata
intermediateaggressive55+ gal
Named after the legendary boxer, Jack Dempsey cichlids are large, territorial Central American cichlids with iridescent blue-green spangles across their dark body. They are aggressive, intelligent, and interactive — many owners report them coming to the glass to greet them. The electric blue Jack Dempsey variant is significantly less aggressive and more colorful.
Full care guide →Other Compatible Tank Mates
For Molly:
For Jack Dempsey Cichlid:
Ad