Can yellow labs live with endlers?

Verdict
Yes

Yes, yellow labs and endlers can live together. Both are fine at 75–82°F. Plan on at least 40 gal.

Electric yellow cichlidElectric yellow cichlid75–82°F · pH 7.8–8.6 Endler's livebearerEndler's livebearer72–82°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Electric yellow cichlid 75–82°Endler's livebearer 72–82°
The green band is the temperature range both can live in.
456789Both: 7.8–8Electric yellow cichlid 7.8–8.6Endler's livebearer 7–8
The green band is the pH both tolerate.

Size to scale

Electric yellow cichlid · 4 inEndler's livebearer · 1 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 cichlidEndler's livebearer
Temperature75–82 °F72–82 °F
pH7.8–8.67–8
Adult size4.0 in1.0 in
Minimum tank40 gal5 gal
TemperamentSemi-aggressivePeaceful
Swims atAll levelsTop
GroupGroups of 4+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for yellow labs

All electric yellow cichlid tank mates

Better tank mates for endlers

All endler's livebearer tank mates

Questions

Can yellow labs live with endlers?

Yes, yellow labs and endlers can live together. Both are fine at 75–82°F. Plan on at least 40 gal.

What temperature suits both yellow labs and endlers?

75–82 °F. Yellow labs need 75–82 °F, endlers need 72–82 °F.

What size tank do yellow labs and endlers need together?

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