8 mm for Koi from 60 cm
Jumbo Koi need to maintain and improve their body shape and colour. In addition, they can live to an old age and therefore have to remain healthy. Giving them large amounts of protein does not make them grow more quickly. In fact, it has the exact opposite effect. Jumbo Koi need smaller amounts of very easily digestible proteins of the highest quality. Combined with optimum support for their health and colour, it is possible that they reach their maximum genetically determined length and old age.