JI Tilapia is a new hybrid and salt tolerant species developed for culture and published in the 1 339th announcement of Agriculture Ministry of China in February 2010. We investigated the dynamics of total particular matter (TPM) and particular organic matter (POM) in 3 shrimp-tilapia poly-culture ponds (406, 407, and 408) in Dianbai, Maoming City, Guangdong province between August and October, 2010. In addition, we evaluated the effects of POM on the growth and survival of tilapia. The concentration of TPM ranged between 35.0 and 153.8 mg/L, (83.1±34.1) mg/L. The concentration of particular inorganic matter (PIM) ranged between 19.0 and 54.0 mg/L, (34.3±11.8) mg/Land constituted 41.28% of TPM. The dry weight of plankton (PZ) ranged between 2.43 and 22.48 mg/L, (9.63±5.91) mg/L, and constituted 11.59% of TPM. The dry weight of phytoplankton (DWP) ranged from 2.298 to 22.105 mg/L, (8.99±5.98) mg/L, and constituted 10.81% of TPM. The dry weight of zooplankton (DWZ) ranged from 0.018 to 2.724 mg/L, (0.65±0.61) mg/L, and constituted 0.78% of TPM. Particular debris and bacteria ranged from 14.339 to 97.958 mg/L, (38.97±25.53) mg/L, and accounted for 81.77% of POM. weight gain and specific growth tilapia cultivated in the cages within Pond 407 than in the other two ponds. However, there were no significant differences in tilapia survival among the three ponds.