Can silver dollars live with black neon tetras?

Verdict
Yes, with care

Yes, with care. Silver dollars and black neon tetras can share a tank, but watch one thing. Silver dollars grow to 6 inches and need 75 gallons, far more than a tank set up for black neon tetras.

Silver dollarSilver dollar75–82°F · pH 5–7 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–81°Silver dollar 75–82°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 5.5–7Silver dollar 5–7Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Silver dollar · 6 inBlack neon tetra · 1.5 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

Silver dollarBlack neon tetra
Temperature75–82 °F73–81 °F
pH5–75.5–7.5
Adult size6.0 in1.5 in
Minimum tank75 gal15 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 5+Groups of 6+
DietHerbivoreOmnivore

Better tank mates for silver dollars

All silver dollar tank mates

Better tank mates for black neon tetras

All black neon tetra tank mates

Questions

Can silver dollars live with black neon tetras?

Yes, with care. Silver dollars and black neon tetras can share a tank, but watch one thing. Silver dollars grow to 6 inches and need 75 gallons, far more than a tank set up for black neon tetras.

What temperature suits both silver dollars and black neon tetras?

75–81 °F. Silver dollars need 75–82 °F, black neon tetras need 73–81 °F.

What size tank do silver dollars and black neon tetras need together?

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