Can jack dempseys live with silver dollars?

Verdict
No

No. Jack dempseys and silver dollars should not share a tank. Jack dempseys are aggressive and will bully peaceful silver dollars.

Jack DempseyJack Dempsey72–86°F · pH 6.5–7.5 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: 75–82°Jack Dempsey 72–86°Silver dollar 75–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7Jack Dempsey 6.5–7.5Silver dollar 5–7
The green band is the pH both tolerate.

Size to scale

Jack Dempsey · 10 inSilver dollar · 6 in0"2"4"6"8"10"
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

Jack DempseySilver dollar
Temperature72–86 °F75–82 °F
pH6.5–7.55–7
Adult size10.0 in6.0 in
Minimum tank55 gal75 gal
TemperamentAggressivePeaceful
Swims atMiddleMiddle
GroupAlone or in pairsGroups of 5+
DietCarnivoreHerbivore

Better tank mates for jack dempseys

All jack dempsey tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can jack dempseys live with silver dollars?

No. Jack dempseys and silver dollars should not share a tank. Jack dempseys are aggressive and will bully peaceful silver dollars.

What temperature suits both jack dempseys and silver dollars?

75–82 °F. Jack dempseys need 72–86 °F, silver dollars need 75–82 °F.

What size tank do jack dempseys and silver dollars need together?

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