Seriola quinqueradiata or commonly called yellowtail is a fish which is greatly appreciated in Japan. Part of the consumed fish are wild caught fish but a substancial part of consumed yellowtail is farmed (about 120.000 tonnes per year). Every year in May, farmers are fishing for the small wild fry (mojaco) which can be found under the floating seaweed. They scoop out the seaweed together with the small fry and put the small fry in net cages in the sea. The small fry are grown until they reach 10-50 g and are sold to farmers which grow them until hamachi (3 kg fish) or until buri (5 kg fish). These days most farmers are using extruded pellets to feed the fish.