Glass eels (Anguilla anguilla) growth in a recirculating system

On a commercial eel farm, which uses a recirculation system, 400,000 glass eels were fanned for a period of 328 days at 20 degrees - 23 degrees C. The physicochemical parameters of the farm water were kept at normal conditions during the experiment. The NO2- was kept between 1.0 and 3.0 mg/l. By the end of the experiment, 4,582 kg of fish feed were consumed and 2,939 kg of eels were produced ( 177,523 eels with mean final individual body weight of 16.6g and mean food conversion ratio of 1.625). The glass eels showed a high variability in their capacity to grow.