Can congo tetras live with glowlight tetras?

Verdict
Yes

Yes, congo tetras and glowlight tetras can live together. Both are fine at 74–80°F. Plan on at least 30 gal.

Congo tetraCongo tetra73–82°F · pH 6–7.5 Glowlight tetraGlowlight tetra74–80°F · pH 6–7.5

Why it works

Water side by side

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

Size to scale

Congo tetra · 3 inGlowlight tetra · 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

Congo tetraGlowlight tetra
Temperature73–82 °F74–80 °F
pH6–7.56–7.5
Adult size3.0 in1.5 in
Minimum tank30 gal10 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for congo tetras

All congo tetra tank mates

Better tank mates for glowlight tetras

All glowlight tetra tank mates

Questions

Can congo tetras live with glowlight tetras?

Yes, congo tetras and glowlight tetras can live together. Both are fine at 74–80°F. Plan on at least 30 gal.

What temperature suits both congo tetras and glowlight tetras?

74–80 °F. Congo tetras need 73–82 °F, glowlight tetras need 74–80 °F.

What size tank do congo tetras and glowlight tetras need together?

At least 30 gal, set by the congo tetra. Add space for each extra fish.