The deep-sea fish hoki, also known as blue hake or blue grenadier, is one of New Zealand’s biggest fish exports. Hoki fishing began in the Tasman Sea, but has expanded to include Cook Strait, the Chatham Rise and subantarctic waters. In the decade to 2002 the annual quota for the catch was 200,000 tonnes. In 2004 the Tasman Sea stock was estimated to be down to about 13% of the biomass before fishing developed in 1972, with a warming trend in the Tasman likely to be a contributing factor. The quota was reduced to 180,000, then to 100,000 tonnes in 2004.
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