Can bolivian rams live with hatchetfish?

Verdict
Yes

Yes. Bolivian rams and hatchetfish make a good pair. Both are fine at 75–79°F. Plan on at least 20 gal.

Bolivian ramBolivian ram72–79°F · pH 6–7.5 HatchetfishHatchetfish75–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Bolivian ram 72–79°Hatchetfish 75–81°
The green band is the temperature range both can live in.
456789Both: 6–7.5Bolivian ram 6–7.5Hatchetfish 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Bolivian ram · 3 inHatchetfish · 1.5 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

Bolivian ramHatchetfish
Temperature72–79 °F75–81 °F
pH6–7.55.5–7.5
Adult size3.0 in1.5 in
Minimum tank20 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupAlone or in pairsGroups of 6+
DietOmnivoreCarnivore

Better tank mates for bolivian rams

All bolivian ram tank mates

Better tank mates for hatchetfish

All hatchetfish tank mates

Questions

Can bolivian rams live with hatchetfish?

Yes. Bolivian rams and hatchetfish make a good pair. Both are fine at 75–79°F. Plan on at least 20 gal.

What temperature suits both bolivian rams and hatchetfish?

75–79 °F. Bolivian rams need 72–79 °F, hatchetfish need 75–81 °F.

What size tank do bolivian rams and hatchetfish need together?

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