Mosquitofish vs Butterfly splitfin: can they live together?

Verdict: With caution

  • The Mosquitofish can be semi-aggressive or nip fins.
  • The Butterfly splitfin grows about twice as long as the Mosquitofish; watch for bullying or predation.
  • Both are comfortable at 26–29°C (79–84°F).
  • A pH of 6.0–8.0 suits both.
  • Minimum tank for the pair: 75 L (20 US gal)

Side by side

MosquitofishButterfly splitfin
Adult size4 cm (1.6 in)8 cm (3.1 in)
Minimum tank40 L (11 US gal)75 L (20 US gal)
Temperature12–29°C (54–84°F)26–32°C (79–90°F)
pH6.0–8.06.0–8.0
Hardness5–19 dGH (89–339 ppm)9–19 dGH (161–339 ppm)
TemperamentSemi-aggressivePeaceful
Community tankGoodGood
Care levelEasyEasy
DietOmnivoreOmnivore

Species profiles