Can mollies live with silver dollars?

Verdict

Yes, with care

Yes, with care. Mollies and silver dollars can share a tank, but watch one thing. Different water: mollies want pH 7.5–8.5, silver dollars want pH 5–7.

Molly72–82°F · pH 7.5–8.5

Silver dollar75–82°F · pH 5–7

What to watch

Watch outDifferent water: mollies want pH 7.5–8.5, silver dollars want pH 5–7.

What works

Both are fine at 75–82°F.
They use different parts of the tank: mollies the top, silver dollars the mid.

Water side by side

The green band is the temperature range both can live in.

No pH suits both. One would live in the wrong water all the time.

Size to scale

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

	Molly	Silver dollar
Temperature	72–82 °F	75–82 °F
pH	7.5–8.5	5–7
Adult size	4.0 in	6.0 in
Minimum tank	20 gal	75 gal
Temperament	Peaceful	Peaceful
Swims at	Top	Middle
Group	Groups of 3+	Groups of 5+
Diet	Omnivore	Herbivore

Better tank mates for mollies

All molly tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can mollies live with silver dollars?

Yes, with care. Mollies and silver dollars can share a tank, but watch one thing. Different water: mollies want pH 7.5–8.5, silver dollars want pH 5–7.

What temperature suits both mollies and silver dollars?

75–82 °F. Mollies need 72–82 °F, silver dollars need 75–82 °F.

What size tank do mollies and silver dollars need together?

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