A feeding demonstration was conducted at Lake Maninjau, West Sumatra, Indonesia to demonstrate the growth of common carp (Cyprinus carpio) fed soy maximized feeds in 1.5-m3 cages. Common carp fingerlings of 66 g were stocked into three 1.5-m3 cages at 857 fish per cage. Fish in all three cages were fed a soybean meal maximized, extruded feed that was produced domestically in Indonesia. After 82 days of culture the common carp reached an average size of 350 g with an average FCR of 1.42:1. Gross production averaged 192 kg/m3 of cage volume.