A commercial-scale, in-pond raceway system was constructed in 2007 on a commercial catfish fish farm in west Alabama. The in-pond raceway system was installed in a 2.43-ha earthen pond with an average depth of 1.67m. A slow-rotating paddlewheel (1.17 revolutions per minute) installed in each raceway produced a water velocity of 0.026m/s and a water flow rate of 9.3m 3 /min. This flow rate was equivalent to an average water exchange for each raceway every 4.9min (≈12×/h). Each raceway was originally stocked with 12,000–30,000 advanced channel catfish (Ictalurus punctatus) and hybrid catfish (I. punctatus×Ictalurus furcatus) fingerlings weighing between 59.1 and 418.2g to simulate a staggered stocking and harvest production schedule. During the 2008 production season, mean survival was 83.7% across all raceways. Growth rates ranged from 1.1 to 1.8g/fish/day for channel catfish and from 1.6 to 2.2g/fish/day for hybrid catfish. The average feed conversion ratio (FCR) for channel catfish and hybrid catfish was 1.74 and 1.36, respectively (range from 1.16 to 2.11) and 49,913kg (20,540kg/ha) of catfish were harvested. An additional 6365kg (2619kg/ha) of tilapia and paddlefish were harvested from the pond as co-cultured species. The results indicated a high potential for efficient production of catfish with other co-cultured species compared to traditional catfish culture practices in ponds. Design and engineering modifications need to be addressed in the future to improve the in-pond raceway system.