A feeding demonstration was conducted at Lake Maninjau, West Sumatra, Indonesia to demonstrate the growth potential of common carp (Cyprinus carpio) cultured using soy maximized feeds in 3.5-m3 cages. Common carp fingerlings of 44 g were stocked into three 3.5-m3 cages at 1,755 fish per cage. Fish in all three cages were fed a soybean meal maximized, extruded feed that was produced domestically in Indonesia. After 98 days of culture the common carp reached an average size of 314 g with an average FCR of 1.55:1. Gross production averaged165 kg/m3 of cage volume.