The effects of different stocking rates and ratios of Tilapia aurea (Steindachner) in combination with Cichlasoma managuense (Günther) on tilapia recruitment and production were evaluated in 440 m 2 ponds. The research was conducted at the National Fisheries Station in El Salvador, Central America. The tilapia A T value, the total weight of marketable tilapia (14 cm or larger) expressed as a percentage of the total weight of the whole tilapia population, averaged 96 or greater at a stocking ratio of 4:1 (fingerling tilapia: fingerling C. managuense) and at a stocking ratio of 8:1 (fingerling tilapia: adult C. managuense). Tilapia A T values at a stocking ratio of 8:1 (fingerling tilapia: fingerling C. managuense) ranged from 71–89. Highest estimated annual production of marketable tilapia (3611 kg ha −1) occurred at the highest stocking rate of 12000 tilapia ha −1 in populations with an average tilapia A T value of 98. Greatest weight gain of marketable tilapia (167 g of 1.17 g day −1) occurred at the lowest stocking rate of 6000 tilapia ha −1 in populations with an average tilapia A T value of 99. Estimated annual production of marketable C. managuense ranged from 212–414 kg ha −1. The average weight gain of marketable fish varied from 48–60 g (0.32–0.40 g day −1). The average C. managuense, A T value was 54, ranging from 29–84. The estimated production of marketable fish of both species at stocking rates of 6000, 9000 and 12000 tilapia ha −1 in populations with tilapia A T values of 96 or greater averaged 3295, 3290 and 4025 kg ha −1 per year, respectively.