Can rams live with celestial pearl danios?

Verdict
No

No. Rams and celestial pearl danios should not share a tank. No shared temperature. Rams need 80–86°F, celestial pearl danios need 72–79°F.

German blue ramGerman blue ram80–86°F · pH 5–7 Celestial pearl danioCelestial pearl danio72–79°F · pH 6.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°German blue ram 80–86°Celestial pearl danio 72–79°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 6.5–7German blue ram 5–7Celestial pearl danio 6.5–7.5
The green band is the pH both tolerate.

Size to scale

German blue ram · 2.5 inCelestial pearl danio · 1 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

German blue ramCelestial pearl danio
Temperature80–86 °F72–79 °F
pH5–76.5–7.5
Adult size2.5 in1.0 in
Minimum tank20 gal10 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for rams

All german blue ram tank mates

Better tank mates for celestial pearl danios

All celestial pearl danio tank mates

Questions

Can rams live with celestial pearl danios?

No. Rams and celestial pearl danios should not share a tank. No shared temperature. Rams need 80–86°F, celestial pearl danios need 72–79°F.

What temperature suits both rams and celestial pearl danios?

None. Rams need 80–86 °F and celestial pearl danios need 72–79 °F, so the ranges do not meet.

What size tank do rams and celestial pearl danios need together?

At least 20 gal, set by the german blue ram. Add space for each extra fish.