Can paradise fish live with serpae tetras?

Verdict
Yes

Yes, paradise fish and serpae tetras can live together. Both are fine at 72–79°F. Plan on at least 20 gal.

Paradise fishParadise fish61–79°F · pH 6–8 Serpae tetraSerpae tetra72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Paradise fish 61–79°Serpae tetra 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Paradise fish 6–8Serpae tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Paradise fish · 3.5 inSerpae tetra · 1.75 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

Paradise fishSerpae tetra
Temperature61–79 °F72–79 °F
pH6–86–7.5
Adult size3.5 in1.75 in
Minimum tank20 gal20 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atTopMiddle
GroupOne per tankGroups of 6+
DietOmnivoreOmnivore

Better tank mates for paradise fish

All paradise fish tank mates

Better tank mates for serpae tetras

All serpae tetra tank mates

Questions

Can paradise fish live with serpae tetras?

Yes, paradise fish and serpae tetras can live together. Both are fine at 72–79°F. Plan on at least 20 gal.

What temperature suits both paradise fish and serpae tetras?

72–79 °F. Paradise fish need 61–79 °F, serpae tetras need 72–79 °F.

What size tank do paradise fish and serpae tetras need together?

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