A research on the composition of freshwater snails and trematode larvae (cercariae stage) in 20 grow-out ponds of giant gourami was carried out in Chau Thanh district, Tien Giang province in October 2020 and April 2021. A total of 4,548 samples of snails including 8 species, 8 genera, 4 families was collected and identified by morphological method. The results showed that Melanoides tuberculata was infected Xiphidio cercariae and Furcocercous cercariae whereas Xiphidio cercariae and Parapleurolophocercous cercariae were recovered from Bithynia sp. No cercariae were found in Filopaludina sumatrensis, Pomacea sp., Sermyla tornatella, Sinotaia lithophaga, Tarebia granifera and Thiara scabra. The trematode pond prevalence (cercariae stage) in the dry season was higher than the wet season (P>
0.05). Further research on the epidemiology of trematodes in giant gourami cultured in ponds should be done to control the trematode infection in cercariae stage to contribute to the sustainable aquaculture development and food safety