Growth performance and culture characteristics between Taiwanese red tialpia and Nile tilapia were compared in concrete tanks at National Tilapia Seed Farm of Qingdao. Both of them grew with straight line at early 80 days. There were not significant differences of weights between them when their body length were less than 10cm; significant when more than 10cm; Nile tilapia was heavier than Taiwanese red tilapia at same body length. Growth rate, average catching sizes, net production and fat factor of Nile tialapia were significantly higher than those of Taiwanese red tilapia when they were caught at 230 days.