Northern trout gudgeon vs Violet goby: can they live together?

Verdict: With caution

  • The Violet goby is best kept in a species tank.
  • The Violet goby can be semi-aggressive or nip fins.
  • The Northern trout gudgeon can be semi-aggressive or nip fins.
  • The Violet goby grows about twice as long as the Northern trout gudgeon; watch for bullying or predation.
  • Both are comfortable at 24–26°C (75–79°F).
  • A pH of 7.0–7.8 suits both.
  • Minimum tank for the pair: 210 L (55 US gal)

Side by side

Northern trout gudgeonViolet goby
Adult size17.5 cm (6.9 in)50 cm (20 in)
Minimum tank150 L (40 US gal)210 L (55 US gal)
Temperature24–26°C (75–79°F)20–26°C (68–79°F)
pH6.0–7.87.0–8.0
Hardness–9–19 dGH (161–339 ppm)
TemperamentSemi-aggressiveSemi-aggressive
Community tankGoodNot suitable
Care levelEasyModerate
DietOmnivore–

Species profiles