Can hillstream loaches live with ember tetras?

Verdict
Yes

Yes. Hillstream loaches and ember tetras get along in the same tank. Both are fine at 73–75°F. Plan on at least 20 gal.

Hillstream loachHillstream loach68–75°F · pH 6.5–7.5 Ember tetraEmber tetra73–84°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–75°Hillstream loach 68–75°Ember tetra 73–84°
The green band is the temperature range both can live in.
456789Both: 6.5–7Hillstream loach 6.5–7.5Ember tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Hillstream loach · 2.5 inEmber tetra · 0.8 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 loachEmber tetra
Temperature68–75 °F73–84 °F
pH6.5–7.55.5–7
Adult size2.5 in0.8 in
Minimum tank20 gal5 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupGroups of 3+Groups of 6+
DietHerbivoreOmnivore

Better tank mates for hillstream loaches

All hillstream loach tank mates

Better tank mates for ember tetras

All ember tetra tank mates

Questions

Can hillstream loaches live with ember tetras?

Yes. Hillstream loaches and ember tetras get along in the same tank. Both are fine at 73–75°F. Plan on at least 20 gal.

What temperature suits both hillstream loaches and ember tetras?

73–75 °F. Hillstream loaches need 68–75 °F, ember tetras need 73–84 °F.

What size tank do hillstream loaches and ember tetras need together?

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