Gonzales-Corre (1988) reported that tilapia were found to compete with shrimp for
food. Saelee (2002) conducted studies on the polyculture of shrimp and Nile tilapia in low
salinity water. He found that FCR of shrimp from polyculture was approximately equal to 2
and was higher than that in the monoculture (about 1.6). He concluded that tilapia-shrimp
polyculture is feasible technically, but may not be attractive economically. One way of
circumventing the problem of tilapia competing with shrimp for expensive pelleted feed is by
culturing the tilapia in a cage. In the present survey, however, FCR of shrimp in the
polyculture was found to be lower than that in the monoculture.