Can pea puffers live with black neon tetras?

Verdict
No

No. Pea puffers and black neon tetras should not share a tank. Pea puffers are aggressive and will bully peaceful black neon tetras.

Pea pufferPea puffer74–82°F · pH 7–8 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–81°Pea puffer 74–82°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 7–7.5Pea puffer 7–8Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Pea puffer · 1 inBlack neon tetra · 1.5 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

Pea pufferBlack neon tetra
Temperature74–82 °F73–81 °F
pH7–85.5–7.5
Adult size1.0 in1.5 in
Minimum tank5 gal15 gal
TemperamentAggressivePeaceful
Swims atAll levelsMiddle
GroupAlone or in pairsGroups of 6+
DietCarnivoreOmnivore

Better tank mates for pea puffers

All pea puffer tank mates

Better tank mates for black neon tetras

All black neon tetra tank mates

Questions

Can pea puffers live with black neon tetras?

No. Pea puffers and black neon tetras should not share a tank. Pea puffers are aggressive and will bully peaceful black neon tetras.

What temperature suits both pea puffers and black neon tetras?

74–81 °F. Pea puffers need 74–82 °F, black neon tetras need 73–81 °F.

What size tank do pea puffers and black neon tetras need together?

At least 15 gal, set by the black neon tetra. Add space for each extra fish.