Fig. 3. Feed conversion ratios by region/production system. FCRs were calculated from survey responses using the total amount of feed used and the total amount of fish produced for
market in each production system. Goodness-of-fit tests showed FCRs in each region to best fit a log-logistic distribution. The median FCRs for the farmers surveyed are as follows: 1.4
for Hainan (tilapia), 1.5 for Shandong (carps), 1.9 for Jiashan (carp/turtle polyculture), and 1.9 for Qiandaohu (carps and other finfish).
Source: Aquaculture producer survey