Evolution Aqua Premier Koi Food Premier Koi Food - Have been specially designed to enhance your Koi’s overall development, help with their growth and develop richer colours. Premier pellets form a high protein, well balanced floating diet, formulated from high quality ingredients. Incorporated into the formulation of Premier pellets is Bio-Mos®, which is derived from a specific strain of yeast. Bio-Mos® helps to improve nutrition and overall health. Premier pellets also contain Spirulina, Omega 6 and 3. There are NO added artificial colourings.