10% of the population. The large difference in final
survival rate between ponds A (80-92%) and B
(54-67%) was caused by poaching in pond B (which
was estimated at 50% loss). The feed conversion ratio
(FCR) also exhibited a large variation, ranging from
1.5 to 3.4. The upper values were relatively high
compared to the land-based pond culture and were
probably due to inaccurate estimates of the fish
standing crop in the crowded cages, which made
representative sampling difficult. As handling