Can chinese algae eaters live with hatchetfish?

Verdict
Yes

Yes. Chinese algae eaters and hatchetfish make a good pair. Both are fine at 75–80°F. Plan on at least 75 gal.

Chinese algae eaterChinese algae eater74–80°F · pH 6–8 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°Chinese algae eater 74–80°Hatchetfish 75–81°
The green band is the temperature range both can live in.
456789Both: 6–7.5Chinese algae eater 6–8Hatchetfish 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Chinese algae eater · 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

Chinese algae eaterHatchetfish
Temperature74–80 °F75–81 °F
pH6–85.5–7.5
Adult size10.0 in1.5 in
Minimum tank75 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomTop
GroupAlone or in pairsGroups of 6+
DietHerbivoreCarnivore

Better tank mates for chinese algae eaters

All chinese algae eater tank mates

Better tank mates for hatchetfish

All hatchetfish tank mates

Questions

Can chinese algae eaters live with hatchetfish?

Yes. Chinese algae eaters and hatchetfish make a good pair. Both are fine at 75–80°F. Plan on at least 75 gal.

What temperature suits both chinese algae eaters and hatchetfish?

75–80 °F. Chinese algae eaters need 74–80 °F, hatchetfish need 75–81 °F.

What size tank do chinese algae eaters and hatchetfish need together?

At least 75 gal, set by the chinese algae eater. Add space for each extra fish.