Can killifish live with peacock cichlids?
Verdict
No
No. Killifish and peacock cichlids should not share a tank. Different water: killifish want pH 5.5–7, peacock cichlids want pH 7.8–8.6.
What to watch
- Deal breakerDifferent water: killifish want pH 5.5–7, peacock cichlids want pH 7.8–8.6.
- Watch outThey only share 76–77°F. Keep the heater set there and steady.
What works
- They use different parts of the tank: killifish the top, peacock cichlids the mid.
Water side by side
Size to scale
Care at a glance
| Killifish | Peacock cichlid | |
|---|---|---|
| Temperature | 70–77 °F | 76–82 °F |
| pH | 5.5–7 | 7.8–8.6 |
| Adult size | 2.5 in | 6.0 in |
| Minimum tank | 10 gal | 55 gal |
| Temperament | Peaceful | Semi-aggressive |
| Swims at | Top | Middle |
| Group | Alone or in pairs | Groups of 4+ |
| Diet | Carnivore | Carnivore |
Better tank mates for killifish
Better tank mates for peacock cichlids
MollyYes
Electric yellow cichlidYes
Firemouth cichlidYes
Blue gouramiYes
OscarYes
Chinese algae eaterYes
All peacock cichlid tank mates
Questions
Can killifish live with peacock cichlids?
No. Killifish and peacock cichlids should not share a tank. Different water: killifish want pH 5.5–7, peacock cichlids want pH 7.8–8.6.
What temperature suits both killifish and peacock cichlids?
76–77 °F. Killifish need 70–77 °F, peacock cichlids need 76–82 °F.
What size tank do killifish and peacock cichlids need together?
At least 55 gal, set by the peacock cichlid. Add space for each extra fish.