Brilliant rasbora vs Mosquitofish: can they live together?

Verdict: With caution

  • The Mosquitofish can be semi-aggressive or nip fins.
  • The Brilliant rasbora grows about twice as long as the Mosquitofish; watch for bullying or predation.
  • Both are comfortable at 22–26°C (72–79°F).
  • A pH of 6.0–6.5 suits both.
  • Minimum tank for the pair: 110 L (29 US gal)

Side by side

Brilliant rasboraMosquitofish
Adult size9 cm (3.5 in)4 cm (1.6 in)
Minimum tank110 L (29 US gal)40 L (11 US gal)
Temperature22–26°C (72–79°F)12–29°C (54–84°F)
pH6.0–6.56.0–8.0
Hardness–5–19 dGH (89–339 ppm)
TemperamentPeacefulSemi-aggressive
Community tankGoodGood
Care levelEasyEasy
DietOmnivoreOmnivore

Species profiles