Can cardinal tetras live with endlers?

Verdict
Yes, with care

Yes, with care. Cardinal tetras and endlers can share a tank, but watch one thing. Water chemistry is a squeeze. The only pH that suits both is around 7.

Cardinal tetraCardinal tetra76–84°F · pH 4.6–7 Endler's livebearerEndler's livebearer72–82°F · pH 7–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–82°Cardinal tetra 76–84°Endler's livebearer 72–82°
The green band is the temperature range both can live in.
456789Both: 7Cardinal tetra 4.6–7Endler's livebearer 7–8
The green band is the pH both tolerate.

Size to scale

Cardinal tetra · 2 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

Cardinal tetraEndler's livebearer
Temperature76–84 °F72–82 °F
pH4.6–77–8
Adult size2.0 in1.0 in
Minimum tank20 gal5 gal
TemperamentPeacefulPeaceful
Swims atMiddleTop
GroupGroups of 6+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for cardinal tetras

All cardinal tetra tank mates

Better tank mates for endlers

All endler's livebearer tank mates

Questions

Can cardinal tetras live with endlers?

Yes, with care. Cardinal tetras and endlers can share a tank, but watch one thing. Water chemistry is a squeeze. The only pH that suits both is around 7.

What temperature suits both cardinal tetras and endlers?

76–82 °F. Cardinal tetras need 76–84 °F, endlers need 72–82 °F.

What size tank do cardinal tetras and endlers need together?

At least 20 gal, set by the cardinal tetra. Add space for each extra fish.