Can goldfish live with hatchetfish?

Verdict
No

No. Goldfish and hatchetfish should not share a tank. Goldfish are coldwater animals (60–74°F); hatchetfish need 75–81°F. No temperature suits both.

GoldfishGoldfish60–74°F · pH 7–8 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°Goldfish 60–74°Hatchetfish 75–81°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 7–7.5Goldfish 7–8Hatchetfish 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Goldfish · 10 inHatchetfish · 1.5 in0"2"4"6"8"10"
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

GoldfishHatchetfish
Temperature60–74 °F75–81 °F
pH7–85.5–7.5
Adult size10.0 in1.5 in
Minimum tank40 gal20 gal
TemperamentPeacefulPeaceful
Swims atAll levelsTop
GroupAlone or in pairsGroups of 6+
DietOmnivoreCarnivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for hatchetfish

All hatchetfish tank mates

Questions

Can goldfish live with hatchetfish?

No. Goldfish and hatchetfish should not share a tank. Goldfish are coldwater animals (60–74°F); hatchetfish need 75–81°F. No temperature suits both.

What temperature suits both goldfish and hatchetfish?

None. Goldfish need 60–74 °F and hatchetfish need 75–81 °F, so the ranges do not meet.

What size tank do goldfish and hatchetfish need together?

At least 40 gal, set by the goldfish. Add space for each extra fish.