HomeCompare fishBrilliant rasbora vs Gulf gambusia Brilliant rasbora vs Gulf gambusia: can they live together? Verdict: CompatibleBoth are comfortable at 22–25°C (72–77°F).A pH of 6.5 suits both.Minimum tank for the pair: 110 L (29 US gal)Side by sideBrilliant rasboraGulf gambusiaAdult size9 cm (3.5 in)5 cm (2 in)Minimum tank110 L (29 US gal)20 L (5 US gal)Temperature22–26°C (72–79°F)22–25°C (72–77°F)pH6.0–6.56.5–7.8TemperamentPeaceful–Community tankGoodGoodCare levelEasy–DietOmnivoreOmnivoreSpecies profilesBrilliant rasboraRasbora einthoveniiGulf gambusiaGambusia vittata