Can hillstream loaches live with zebra danios?

Verdict
Yes

Yes. Hillstream loaches and zebra danios make a good pair. Both are fine at 68–75°F. Plan on at least 20 gal.

Hillstream loachHillstream loach68–75°F · pH 6.5–7.5 Zebra danioZebra danio65–77°F · pH 6.5–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 68–75°Hillstream loach 68–75°Zebra danio 65–77°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Hillstream loach 6.5–7.5Zebra danio 6.5–8
The green band is the pH both tolerate.

Size to scale

Hillstream loach · 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

Hillstream loachZebra danio
Temperature68–75 °F65–77 °F
pH6.5–7.56.5–8
Adult size2.5 in2.0 in
Minimum tank20 gal10 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupGroups of 3+Groups of 6+
DietHerbivoreOmnivore

Better tank mates for hillstream loaches

All hillstream loach tank mates

Better tank mates for zebra danios

All zebra danio tank mates

Questions

Can hillstream loaches live with zebra danios?

Yes. Hillstream loaches and zebra danios make a good pair. Both are fine at 68–75°F. Plan on at least 20 gal.

What temperature suits both hillstream loaches and zebra danios?

68–75 °F. Hillstream loaches need 68–75 °F, zebra danios need 65–77 °F.

What size tank do hillstream loaches and zebra danios need together?

At least 20 gal, set by the hillstream loach. Add space for each extra fish.