Can zebra danios live with rummy nose tetras?

Verdict
Yes

Yes, zebra danios and rummy nose tetras can live together. Both are fine at 75–77°F. Plan on at least 20 gal.

Zebra danioZebra danio65–77°F · pH 6.5–8 Rummy nose tetraRummy nose tetra75–84°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–77°Zebra danio 65–77°Rummy nose tetra 75–84°
The green band is the temperature range both can live in.
456789Both: 6.5–7Zebra danio 6.5–8Rummy nose tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Zebra danio · 2 inRummy nose tetra · 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

Zebra danioRummy nose tetra
Temperature65–77 °F75–84 °F
pH6.5–85.5–7
Adult size2.0 in2.0 in
Minimum tank10 gal20 gal
TemperamentPeacefulPeaceful
Swims atTopMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for zebra danios

All zebra danio tank mates

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Questions

Can zebra danios live with rummy nose tetras?

Yes, zebra danios and rummy nose tetras can live together. Both are fine at 75–77°F. Plan on at least 20 gal.

What temperature suits both zebra danios and rummy nose tetras?

75–77 °F. Zebra danios need 65–77 °F, rummy nose tetras need 75–84 °F.

What size tank do zebra danios and rummy nose tetras need together?

At least 20 gal, set by the rummy nose tetra. Add space for each extra fish.