Utomo, N.; Carman, O.; Fitriyati, F. Effect of Spirulina Platensis Supplementation by Different Concentration in Diet on Red Color Intensity of Kohaku Koi (Cyprinus Carpio L.). Jurnal Akuakultur Indonesia 2007, 5 (1), 1-4. https://doi.org/10.19027/jai.5.1-4.