HomeCompare fishRed rainbowfish vs Blackbarred limia Red rainbowfish vs Blackbarred limia: can they live together? Verdict: With cautionThe Red rainbowfish grows about twice as long as the Blackbarred limia; watch for bullying or predation.Their temperature ranges only just meet, at 25°C (77°F).A pH of 7.0–8.0 suits both.Minimum tank for the pair: 150 L (40 US gal)Side by sideRed rainbowfishBlackbarred limiaAdult size12 cm (4.7 in)6 cm (2.4 in)Minimum tank150 L (40 US gal)–Temperature22–25°C (72–77°F)25–28°C (77–82°F)pH7.0–8.07.0–8.0Hardness9–19 dGH (161–339 ppm)9–19 dGH (161–339 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesRed rainbowfishGlossolepis incisusBlackbarred limiaLimia nigrofasciata