Dwarf rainbowfish vs Yellowbelly gudgeon: can they live together?

Verdict: With caution

  • The Yellowbelly gudgeon is best kept in a species tank.
  • Both are comfortable at 22–26°C (72–79°F).
  • A pH of 6.5–7.0 suits both.
  • Minimum tank for the pair: 150 L (40 US gal)

Side by side

Dwarf rainbowfishYellowbelly gudgeon
Adult size5 cm (2 in)4.5 cm (1.8 in)
Minimum tank150 L (40 US gal)55 L (15 US gal)
Temperature22–28°C (72–82°F)21–26°C (70–79°F)
pH6.5–7.55.5–7.0
Hardness8–18 dGH (143–321 ppm)2–5 dGH (36–89 ppm)
TemperamentPeacefulPeaceful
Community tankGoodNot suitable
Care levelEasyDifficult
DietOmnivoreOmnivore

Species profiles