Can peacock cichlids live with silver dollars?

Verdict
No

No. Peacock cichlids and silver dollars should not share a tank. Different water: peacock cichlids want pH 7.8–8.6, silver dollars want pH 5–7.

Peacock cichlidPeacock cichlid76–82°F · pH 7.8–8.6 Silver dollarSilver dollar75–82°F · pH 5–7

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–82°Peacock cichlid 76–82°Silver dollar 75–82°
The green band is the temperature range both can live in.
456789Peacock cichlid 7.8–8.6Silver dollar 5–7
No pH suits both. One would live in the wrong water all the time.

Size to scale

Peacock cichlid · 6 inSilver dollar · 6 in0"1"2"3"4"5"6"
Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

Peacock cichlidSilver dollar
Temperature76–82 °F75–82 °F
pH7.8–8.65–7
Adult size6.0 in6.0 in
Minimum tank55 gal75 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupGroups of 4+Groups of 5+
DietCarnivoreHerbivore

Better tank mates for peacock cichlids

All peacock cichlid tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can peacock cichlids live with silver dollars?

No. Peacock cichlids and silver dollars should not share a tank. Different water: peacock cichlids want pH 7.8–8.6, silver dollars want pH 5–7.

What temperature suits both peacock cichlids and silver dollars?

76–82 °F. Peacock cichlids need 76–82 °F, silver dollars need 75–82 °F.

What size tank do peacock cichlids and silver dollars need together?

At least 75 gal, set by the silver dollar. Add space for each extra fish.