Can yellow labs live with lemon tetras?

Verdict
Yes, with care

Yes, with care. Yellow labs and lemon tetras can share a tank, but watch one thing. Different water: yellow labs want pH 7.8–8.6, lemon tetras want pH 5.5–7.5.

Electric yellow cichlidElectric yellow cichlid75–82°F · pH 7.8–8.6 Lemon tetraLemon tetra72–82°F · pH 5.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Electric yellow cichlid 75–82°Lemon tetra 72–82°
The green band is the temperature range both can live in.
456789Electric yellow cichlid 7.8–8.6Lemon tetra 5.5–7.5
No pH suits both. One would live in the wrong water all the time.

Size to scale

Electric yellow cichlid · 4 inLemon tetra · 2 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

Electric yellow cichlidLemon tetra
Temperature75–82 °F72–82 °F
pH7.8–8.65.5–7.5
Adult size4.0 in2.0 in
Minimum tank40 gal15 gal
TemperamentSemi-aggressivePeaceful
Swims atAll levelsMiddle
GroupGroups of 4+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for yellow labs

All electric yellow cichlid tank mates

Better tank mates for lemon tetras

All lemon tetra tank mates

Questions

Can yellow labs live with lemon tetras?

Yes, with care. Yellow labs and lemon tetras can share a tank, but watch one thing. Different water: yellow labs want pH 7.8–8.6, lemon tetras want pH 5.5–7.5.

What temperature suits both yellow labs and lemon tetras?

75–82 °F. Yellow labs need 75–82 °F, lemon tetras need 72–82 °F.

What size tank do yellow labs and lemon tetras need together?

At least 40 gal, set by the electric yellow cichlid. Add space for each extra fish.