Can Swordtail Live With Jack Dempsey Cichlid?
Jack Dempsey Cichlid is aggressive and will likely attack or stress tank mates.
Parameter Comparison
| Parameter | Swordtail | Jack Dempsey Cichlid | Overlap |
|---|---|---|---|
| Temperature | 72–82°F | 72–86°F | 72–82°F ✓ |
| pH Range | 7–8.4 | 6.5–8 | 7–8 ✓ |
| Temperament | peaceful | aggressive | Aggression risk ✗ |
| Max Size | 5.5" | 10" | Similar ✓ |
| Min Tank Size | 20 gal | 55 gal | 55 gal minimum together |
| Diet | Omnivore | Carnivore | — |
| Care Level | beginner | intermediate | — |
Species Profiles
Swordtail
Xiphophorus hellerii
Swordtails are hardy, colorful livebearers named for the distinctive elongated lower tail fin (the 'sword') found on males. They come in many color varieties including red, pineapple, marigold, and tuxedo. Larger than guppies but just as easy to care for, swordtails are excellent community fish that prefer hard, alkaline water.
Full care guide →Jack Dempsey Cichlid
Rocio octofasciata
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 →