HomeCompare fishBrilliant rasbora vs Forktail rainbowfish Brilliant rasbora vs Forktail rainbowfish: can they live together? Verdict: CompatibleBoth are comfortable at 24–26°C (75–79°F).A pH of 6.0–6.5 suits both.Minimum tank for the pair: 110 L (29 US gal)Side by sideBrilliant rasboraForktail rainbowfishAdult size9 cm (3.5 in)5 cm (2 in)Minimum tank110 L (29 US gal)75 L (20 US gal)Temperature22–26°C (72–79°F)24–26°C (75–79°F)pH6.0–6.56.0–8.0Hardness–5–12 dGH (89–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesBrilliant rasboraRasbora einthoveniiForktail rainbowfishPseudomugil furcatus