Can rams live with hatchetfish?

Verdict
Yes, with care

Yes, with care. Rams and hatchetfish can share a tank, but watch one thing. They only share 80–81°F. Keep the heater set there and steady.

German blue ramGerman blue ram80–86°F · pH 5–7 HatchetfishHatchetfish75–81°F · pH 5.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 80–81°German blue ram 80–86°Hatchetfish 75–81°
The green band is the temperature range both can live in.
456789Both: 5.5–7German blue ram 5–7Hatchetfish 5.5–7.5
The green band is the pH both tolerate.

Size to scale

German blue ram · 2.5 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

German blue ramHatchetfish
Temperature80–86 °F75–81 °F
pH5–75.5–7.5
Adult size2.5 in1.5 in
Minimum tank20 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupAlone or in pairsGroups of 6+
DietOmnivoreCarnivore

Better tank mates for rams

All german blue ram tank mates

Better tank mates for hatchetfish

All hatchetfish tank mates

Questions

Can rams live with hatchetfish?

Yes, with care. Rams and hatchetfish can share a tank, but watch one thing. They only share 80–81°F. Keep the heater set there and steady.

What temperature suits both rams and hatchetfish?

80–81 °F. Rams need 80–86 °F, hatchetfish need 75–81 °F.

What size tank do rams and hatchetfish need together?

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