House for one-year-old Kois

These concrete ponds are strictly for the selected kois that were chosen among the fry fish and are to be raised for next years batch. There are twenty-two 20ton ponds and four 10ton ponds. After the kois have been selected to be kept in the one-year-old house, they are continuously evaluated under strict criteria; selected many times to be sold as "carefully sorted koi" in the sale starting in September.