Can Dwarf Pencilfish Live With Upside Down Catfish?

Dwarf Pencilfish and Upside Down Catfish CAN coexist, but with some risks. Careful setup and monitoring required.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 75–82°F.

pH ✓ Compatible

Good pH overlap at 6.0–7.0.

Size ⚠ Use Caution

Significant size difference (4" vs 1.2"). Upside Down Catfish may bully or stress Dwarf Pencilfish.

Temperament ✓ Compatible

Both fish have compatible temperaments.

Swim Level ✓ Compatible

Swim level compatibility is fine.

Important Notes

  • Dwarf Pencilfish is a schooling fish and needs at least 6 of its kind.

Tank Requirements

Minimum tank size for this combination: 20 gallons

ParameterDwarf PencilfishUpside Down Catfish
Temperature75–82°F72–82°F
pH5–76–7.5
Max Size1.2"4"
TemperamentPeacefulPeaceful
Swim LevelMiddleAll
Min Tank10 gal20 gal

Check More Combinations

Use our compatibility checker to add more fish and plan your complete tank.