HomeCompare fishDwarf rainbowfish vs Bleeding-heart tetra Dwarf rainbowfish vs Bleeding-heart tetra: can they live together? Verdict: CompatibleBoth are comfortable at 23–28°C (73–82°F).A pH of 6.5–7.2 suits both.Minimum tank for the pair: 150 L (40 US gal)Side by sideDwarf rainbowfishBleeding-heart tetraAdult size5 cm (2 in)6 cm (2.4 in)Minimum tank150 L (40 US gal)75 L (20 US gal)Temperature22–28°C (72–82°F)23–28°C (73–82°F)pH6.5–7.55.6–7.2Hardness8–18 dGH (143–321 ppm)3–12 dGH (54–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesDwarf rainbowfishMelanotaenia praecoxBleeding-heart tetraHyphessobrycon erythrostigma