3.2. Growth and production of fish and its consumption athousehold levelThe survival of tilapia in the IFCAS cage was similar in both HSP(48.61%) and MSP (49.13%). However, there was a significant dif-ference (p < 0.05) found between the IFCAS of HSP and MSP forindividual growth of tilapia (Table 2). The average size of tilapiain IFCAS was 76.2 ± 8.3 and 112.3 ± 37.9 g, respectively, in HSP andMSP after four months, where the initial weight was 0.73 g. Theproduction of tilapia in IFCAS and carp in ponds was significantlyhigher (p < 0.05) in MSP than in HSP. The average total production oftilapia in IFCAS (kg 9 m−2) was 31.2 ± 4.4 and 52.2 ± 25.9 kg in HSPand MSP, respectively. The individual growth of rohu and mrigalwas significantly higher (p < 0.05) in MSP than in HSP (Table 2).However, the individual growth of the bottom feeder, commoncarp was significantly higher (p < 0.05) in HSP compared to MSP.The productivity of carp in ponds was estimated based on thereference value of 70% survival of carp in polyculture systems inBangladesh, as reported by ADB (2005). Complete harvest was notpossible due to difficulty of netting deeper and irregular shapeof ponds, the high expense of pumping out the water, and reluc-tance of farmers to do this. The estimated productivity of carp inHSP was lower than MSP (Table 2). The growth of stinging cat-fish was not comparable between the types of ponds (as it wasonly stocked in HSP), but it was found to grow well in HSP, indi-cating potential for growth and production in MSP too. There wasno any significant difference (p > 0.05) in fish consumption fromIFCAS and ponds between HSP and MSP households. Irrespective ofthe shaded nature of the ponds, total fish consumption from IFCASand pond for four months was more than 20 kg household−1. Percapita consumption of fish originating from IFCAS and pond was4.55 and 3.23 kg in HSP and MSP households, respectively. Fish pro-duced in IFCAS (tilapia) accounted for more than 50% of the totalfish consumed from pond resources (Fig. 4). The remaining largesize tilapia produced from IFCAS was sold to local fish traders andsmaller ones were stocked in the ponds at the end of the experi-ment. Stocked carp along with small tilapia were remained in theponds to make them larger in size for households’ consumption andsale.