Can congo tetras live with chinese algae eaters?

Verdict
Yes

Yes, congo tetras and chinese algae eaters can live together. Both are fine at 74–80°F. Plan on at least 75 gal.

Congo tetraCongo tetra73–82°F · pH 6–7.5 Chinese algae eaterChinese algae eater74–80°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–80°Congo tetra 73–82°Chinese algae eater 74–80°
The green band is the temperature range both can live in.
456789Both: 6–7.5Congo tetra 6–7.5Chinese algae eater 6–8
The green band is the pH both tolerate.

Size to scale

Congo tetra · 3 inChinese algae eater · 10 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

Congo tetraChinese algae eater
Temperature73–82 °F74–80 °F
pH6–7.56–8
Adult size3.0 in10.0 in
Minimum tank30 gal75 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleBottom
GroupGroups of 6+Alone or in pairs
DietOmnivoreHerbivore

Better tank mates for congo tetras

All congo tetra tank mates

Better tank mates for chinese algae eaters

All chinese algae eater tank mates

Questions

Can congo tetras live with chinese algae eaters?

Yes, congo tetras and chinese algae eaters can live together. Both are fine at 74–80°F. Plan on at least 75 gal.

What temperature suits both congo tetras and chinese algae eaters?

74–80 °F. Congo tetras need 73–82 °F, chinese algae eaters need 74–80 °F.

What size tank do congo tetras and chinese algae eaters need together?

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