Can pencilfish live with dwarf gouramis?

Verdict
Yes

Yes, pencilfish and dwarf gouramis can live together. Both are fine at 75–82°F. Plan on at least 15 gal.

PencilfishPencilfish75–82°F · pH 5–7.5 Dwarf gouramiDwarf gourami72–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Pencilfish 75–82°Dwarf gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Pencilfish 5–7.5Dwarf gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Pencilfish · 2 inDwarf gourami · 3 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

PencilfishDwarf gourami
Temperature75–82 °F72–82 °F
pH5–7.56–7.5
Adult size2.0 in3.0 in
Minimum tank15 gal10 gal
TemperamentPeacefulPeaceful
Swims atMiddleTop
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for pencilfish

All pencilfish tank mates

Better tank mates for dwarf gouramis

All dwarf gourami tank mates

Questions

Can pencilfish live with dwarf gouramis?

Yes, pencilfish and dwarf gouramis can live together. Both are fine at 75–82°F. Plan on at least 15 gal.

What temperature suits both pencilfish and dwarf gouramis?

75–82 °F. Pencilfish need 75–82 °F, dwarf gouramis need 72–82 °F.

What size tank do pencilfish and dwarf gouramis need together?

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