The polyculture of frogs and tilapia was evaluated in 12 pens made of polypropylene, installed within
cages linearly distributed in a pond. 43 bullfrogs (Lithobates catesbeianus) with 79.1±16.9g were distributed in each pen; and 30 tilapia fry (Oreochromis niloticus) with 17.0±1.0g were distributed in each
cage.Threefeedingfrequenciesweretested(24,48and96meals/day)andthefeedwas suppliedbyautomatic feeders. Tilapia were fed only withthe leftovers because the feed was supplied justto the frogs.At
the end ofthe experiment(120 days),the average values ofthe apparentfeed conversion ratio (FCR) of
the frogs were 2.46, 2.43 and 2.11 for the feeding frequencies of 24, 48 and 96meals/day, respectively;
regarding the polyculture, frogs and tilapia together,these values were 1.55, 1.52 and 1.33 for the same
frequencies, respectively. The results indicated that the use of high feeding frequency (96meals/day)
improved FCR of frogs’ production with consequent reduction of feed waste. The polyculture showed
thatitis possible to produce frogs in cages sustainably.