Australia's largest single species fishery (by volume) has been developed since 1991 to provide feedstock for the southern bluefin tuna farming industry. Catches in the fishery increased from 3,241 tonnes in 1994 to 42,475 tonnes in 2005. According to the South Australian Sardine Industry Association, 94% of its annual catch is utilized as feedstock for farmed SBT, with the remainder used for human consumption, recreational fishing bait and premium pet food. Fishing effort is largely concentrated in southern Spencer Gulf and Investigator Strait near Kangaroo Island in South Australian state waters. Some fishing also occurs off the Coffin Bay Peninsula in the Great Australian Bight.