Can guppies live with serpae tetras?

Verdict
No

No. Guppies and serpae tetras should not share a tank. Serpae tetras nip fins, and the long fins of guppies are an easy target.

GuppyGuppy72–82°F · pH 6.8–7.8 Serpae tetraSerpae tetra72–79°F · pH 6–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Guppy 72–82°Serpae tetra 72–79°
The green band is the temperature range both can live in.
456789Both: 6.8–7.5Guppy 6.8–7.8Serpae tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Guppy · 2 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

GuppySerpae tetra
Temperature72–82 °F72–79 °F
pH6.8–7.86–7.5
Adult size2.0 in1.75 in
Minimum tank10 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atTopMiddle
GroupGroups of 3+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for guppies

All guppy tank mates

Better tank mates for serpae tetras

All serpae tetra tank mates

Questions

Can guppies live with serpae tetras?

No. Guppies and serpae tetras should not share a tank. Serpae tetras nip fins, and the long fins of guppies are an easy target.

What temperature suits both guppies and serpae tetras?

72–79 °F. Guppies need 72–82 °F, serpae tetras need 72–79 °F.

What size tank do guppies and serpae tetras need together?

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