Thuy Thanh Thi Nguyen of Vietnam’s Research Institute for Aquaculture and Minh Hoan Le of Nha Trang University aim to use their protocol to improve the production of fingerlings in hatcheries and help mariculturists produce tiger grouper year-round. fuscoguttatus) – one of the more expensive grouper species. In Vietnam, a government agency and a university teamed up to develop the country’s first protocol for the cryopreservation of the sperm of tiger grouper ( E. The industry is ripe for further development – particularly in producing high-quality fish at commercial scales with lower environmental impacts. Grouper feed still consists mainly of trash fish, which are sourced from already heavily overfished pelagic stocks. The majority of players still farm groupers in cages submerged in coastal areas which are often heavily polluted. Leopard coral trout (Plectropomus leopardus) fetches up to $300/kg in Chinaįor most countries in South East Asia, however, fingerling production remains unstable. More countries followed suit and around a dozen species can now be grown through full-cycle methods. The United Nations Food and Agriculture Organization estimates that of the 70,000 tonnes of grouper bred in 2007, Taiwan supplied 24.6 percent and accounted for 58 percent of the US$205 million global yield – mostly because Taiwan’s groupers are sold live and thus fetch higher prices.įull-cycle or “closed-loop” grouper mariculture was first achieved in the 1980s for two species – the orange-spotted grouper ( Epinephelus coioides) and Malabar grouper ( E. Taiwan remains the world’s top supplier of farmed grouper. Taiwan has led this revolution since 1975 by ranching wild-caught juvenile groupers until they attain market-size at around 30cm. In response, a shift from wild-capture fisheries to mariculture is occurring. As the popularity of grouper species has been increasing, however, so their natural stocks have been declining.
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