HomeCompare fishRedtail splitfin vs Mosquitofish Redtail splitfin vs Mosquitofish: can they live together? Verdict: With cautionThe Mosquitofish can be semi-aggressive or nip fins.The Redtail splitfin can be semi-aggressive or nip fins.Both are comfortable at 15–29°C (59–84°F).A pH of 6.0–8.0 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideRedtail splitfinMosquitofishAdult size6 cm (2.4 in)4 cm (1.6 in)Minimum tank75 L (20 US gal)40 L (11 US gal)Temperature15–32°C (59–90°F)12–29°C (54–84°F)pH6.0–8.06.0–8.0Hardness9–19 dGH (161–339 ppm)5–19 dGH (89–339 ppm)TemperamentSemi-aggressiveSemi-aggressiveCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesRedtail splitfinXenotoca eiseniMosquitofishGambusia affinis