HomeCompare fishLake Kutubu rainbowfish vs Bleeding-heart tetra Lake Kutubu rainbowfish vs Bleeding-heart tetra: can they live together? Verdict: CompatibleBoth are comfortable at 23–24°C (73–75°F).A pH of 7.0–7.2 suits both.Minimum tank for the pair: 210 L (55 US gal)Side by sideLake Kutubu rainbowfishBleeding-heart tetraAdult size10 cm (3.9 in)6 cm (2.4 in)Minimum tank210 L (55 US gal)75 L (20 US gal)Temperature20–24°C (68–75°F)23–28°C (73–82°F)pH7.0–8.05.6–7.2Hardness9–12 dGH (161–214 ppm)3–12 dGH (54–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesLake Kutubu rainbowfishMelanotaenia lacustrisBleeding-heart tetraHyphessobrycon erythrostigma