Although aquafeed manufacture does not have a long history in Turkey, there are at present nine feed manufacturing companies producing aquafeeds (some of which also produce feeds for domestic land animals). The main finfish species farmed in Turkey are rainbow trout (O. mykiss), European seabass (D. labrax) and gilthead seabream (S. aurata), and common carp (C. carpio); the total aquaculture production of these species in 1996 being 18,510 metric tons (mt), 11,580 mt and 780 mt, respectively. The aquafeed manufacturing plants currently produce feeds ranging in size from micro-granulated-starter feeds for trout, sea bream and sea bass larvae-fry to 2.2-6 mm size pelleted feed for grow-out-adult fish. Pelleted fish feeds are currently produced by conventional mechanical pressing technology, although some plants have plans to change their pelleting technology to the use of extruded plants in 1998.