HomeCompare fishBrilliant rasbora vs Lake Kutubu rainbowfish Brilliant rasbora vs Lake Kutubu rainbowfish: can they live together? Verdict: With cautionTheir preferred pH ranges don't overlap.Both are comfortable at 22–24°C (72–75°F).Minimum tank for the pair: 210 L (55 US gal)Side by sideBrilliant rasboraLake Kutubu rainbowfishAdult size9 cm (3.5 in)10 cm (3.9 in)Minimum tank110 L (29 US gal)210 L (55 US gal)Temperature22–26°C (72–79°F)20–24°C (68–75°F)pH6.0–6.57.0–8.0Hardness–9–12 dGH (161–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesBrilliant rasboraRasbora einthoveniiLake Kutubu rainbowfishMelanotaenia lacustris