Can pea puffers live with dwarf neon rainbowfish?

Verdict

Yes, with care

Yes, with care. Pea puffers and dwarf neon rainbowfish can share a tank, but watch one thing. Pea puffers are aggressive, though dwarf neon rainbowfish are big enough to shrug most of it off.

Pea puffer74–82°F · pH 7–8

Dwarf neon rainbowfish75–82°F · pH 6.5–7.5

What to watch

Watch outPea puffers are aggressive, though dwarf neon rainbowfish are big enough to shrug most of it off.

What works

Both are fine at 75–82°F.
pH 7–7.5 suits both.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

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 puffer	Dwarf neon rainbowfish
Temperature	74–82 °F	75–82 °F
pH	7–8	6.5–7.5
Adult size	1.0 in	2.5 in
Minimum tank	5 gal	20 gal
Temperament	Aggressive	Peaceful
Swims at	All levels	Middle
Group	Alone or in pairs	Groups of 6+
Diet	Carnivore	Omnivore

Better tank mates for pea puffers

CrayfishYes

All pea puffer tank mates

Better tank mates for dwarf neon rainbowfish

All dwarf neon rainbowfish tank mates

Questions

Can pea puffers live with dwarf neon rainbowfish?

Yes, with care. Pea puffers and dwarf neon rainbowfish can share a tank, but watch one thing. Pea puffers are aggressive, though dwarf neon rainbowfish are big enough to shrug most of it off.

What temperature suits both pea puffers and dwarf neon rainbowfish?

75–82 °F. Pea puffers need 74–82 °F, dwarf neon rainbowfish need 75–82 °F.

What size tank do pea puffers and dwarf neon rainbowfish need together?

At least 20 gal, set by the dwarf neon rainbowfish. Add space for each extra fish.