HomeCompare fishRed rainbowfish vs Mosquitofish Red rainbowfish vs Mosquitofish: can they live together? Verdict: Not recommendedThe Mosquitofish can be semi-aggressive or nip fins.An adult Red rainbowfish is about 3 times the length of a Mosquitofish and may eat it.Both are comfortable at 22–25°C (72–77°F).A pH of 7.0–8.0 suits both.Side by sideRed rainbowfishMosquitofishAdult size12 cm (4.7 in)4 cm (1.6 in)Minimum tank150 L (40 US gal)40 L (11 US gal)Temperature22–25°C (72–77°F)12–29°C (54–84°F)pH7.0–8.06.0–8.0Hardness9–19 dGH (161–339 ppm)5–19 dGH (89–339 ppm)TemperamentPeacefulSemi-aggressiveCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesRed rainbowfishGlossolepis incisusMosquitofishGambusia affinis