Can ramshorn snails live with hatchetfish?

Verdict
Yes

Yes. Ramshorn snails and hatchetfish get along in the same tank. Both are fine at 75–80°F. Plan on at least 20 gal.

Ramshorn snailRamshorn snail70–80°F · pH 7–8 HatchetfishHatchetfish75–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Ramshorn snail 70–80°Hatchetfish 75–81°
The green band is the temperature range both can live in.
456789Both: 7–7.5Ramshorn snail 7–8Hatchetfish 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Ramshorn snail · 1 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

Ramshorn snailHatchetfish
Temperature70–80 °F75–81 °F
pH7–85.5–7.5
Adult size1.0 in1.5 in
Minimum tank5 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupAlone or in pairsGroups of 6+
DietOmnivoreCarnivore

Better tank mates for ramshorn snails

All ramshorn snail tank mates

Better tank mates for hatchetfish

All hatchetfish tank mates

Questions

Can ramshorn snails live with hatchetfish?

Yes. Ramshorn snails and hatchetfish get along in the same tank. Both are fine at 75–80°F. Plan on at least 20 gal.

What temperature suits both ramshorn snails and hatchetfish?

75–80 °F. Ramshorn snails need 70–80 °F, hatchetfish need 75–81 °F.

What size tank do ramshorn snails and hatchetfish need together?

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