Can celestial pearl danios live with pencilfish?

Verdict
Yes

Yes. Celestial pearl danios and pencilfish get along in the same tank. Both are fine at 75–79°F. Plan on at least 15 gal.

Celestial pearl danioCelestial pearl danio72–79°F · pH 6.5–7.5 PencilfishPencilfish75–82°F · pH 5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Celestial pearl danio 72–79°Pencilfish 75–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Celestial pearl danio 6.5–7.5Pencilfish 5–7.5
The green band is the pH both tolerate.

Size to scale

Celestial pearl danio · 1 inPencilfish · 2 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

Celestial pearl danioPencilfish
Temperature72–79 °F75–82 °F
pH6.5–7.55–7.5
Adult size1.0 in2.0 in
Minimum tank10 gal15 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for celestial pearl danios

All celestial pearl danio tank mates

Better tank mates for pencilfish

All pencilfish tank mates

Questions

Can celestial pearl danios live with pencilfish?

Yes. Celestial pearl danios and pencilfish get along in the same tank. Both are fine at 75–79°F. Plan on at least 15 gal.

What temperature suits both celestial pearl danios and pencilfish?

75–79 °F. Celestial pearl danios need 72–79 °F, pencilfish need 75–82 °F.

What size tank do celestial pearl danios and pencilfish need together?

At least 15 gal, set by the pencilfish. Add space for each extra fish.