Can rams live with zebra danios?

Verdict
No

No. Rams and zebra danios should not share a tank. No shared temperature. Rams need 80–86°F, zebra danios need 65–77°F.

German blue ramGerman blue ram80–86°F · pH 5–7 Zebra danioZebra danio65–77°F · pH 6.5–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°German blue ram 80–86°Zebra danio 65–77°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 6.5–7German blue ram 5–7Zebra danio 6.5–8
The green band is the pH both tolerate.

Size to scale

German blue ram · 2.5 inZebra danio · 2 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 ramZebra danio
Temperature80–86 °F65–77 °F
pH5–76.5–8
Adult size2.5 in2.0 in
Minimum tank20 gal10 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for rams

All german blue ram tank mates

Better tank mates for zebra danios

All zebra danio tank mates

Questions

Can rams live with zebra danios?

No. Rams and zebra danios should not share a tank. No shared temperature. Rams need 80–86°F, zebra danios need 65–77°F.

What temperature suits both rams and zebra danios?

None. Rams need 80–86 °F and zebra danios need 65–77 °F, so the ranges do not meet.

What size tank do rams and zebra danios need together?

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