HomeCompare fishBrilliant rasbora vs Butterfly splitfin Brilliant rasbora vs Butterfly splitfin: can they live together? Verdict: With cautionTheir temperature ranges only just meet, at 26°C (79°F).A pH of 6.0–6.5 suits both.Minimum tank for the pair: 110 L (29 US gal)Side by sideBrilliant rasboraButterfly splitfinAdult size9 cm (3.5 in)8 cm (3.1 in)Minimum tank110 L (29 US gal)75 L (20 US gal)Temperature22–26°C (72–79°F)26–32°C (79–90°F)pH6.0–6.56.0–8.0Hardness–9–19 dGH (161–339 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesBrilliant rasboraRasbora einthoveniiButterfly splitfinAmeca splendens