Yellow Rainbow Fish Yellow Rainbow Fish are another boisterous fish that can be semi-aggressive with smaller fish or anything with long fins. Features Approx. size: 3-4cm Maximum size: 15cm Origin: Asia Ideal number kept together: 6+Water conditionspH: 6.0 – 7.0Hardness: 10-20°HTemperature: 22 – 26 °CEase of careEasy. They are very hardy and can adapt to changes in water conditions.DietTropical flake would be best however they can have occasional small live or frozen foods.CompatibilityCommunity of similar size with no long fined fish as they can be semi-aggressive towards them.Breeding/ SexModerate. Egg scatter, the fry can be difficult to raise. males are larger and brighter than females.Life SpanThey can live to anything from 4 - 7 years in perfect conditions. Please be aware that the image is for illustration purposes only. We are unable to guarantee the size, colour, sex or age of the fishes you are purchasing. If you have any questions regarding livestock please contact us. To minimise stress we are unable to hand pick specific fish. Lifespan is an estimate based on optimum conditions. To view the Compatibility Advisory Chart please select the Additional Tab above.