Word: fishly
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Some of the antibiotics that fish farmers give their stock to minimize disease pass easily into the surrounding environment, and some are highly toxic. Last year traces of the banned drug nitrofuran, which is dangerous to humans, were found by European Union inspectors in shrimp from Myanmar, Thailand and Vietnam. According to Wang Sihe, an expert with the Jiangsu Seawater Fisheries Research Institute, Chinese shrimp farms have mixed fish food with antibiotics and dumped it into fish ponds. Chloramphenicol, an antibiotic that can cause fatal anemia in humans, has also been used...
...long run, wild-fish stocks may face an even greater threat from captive fish escaping and competing with or consuming native fish, or cross-breeding with them and diluting the genes that have helped them survive. Fish escapes are common: nets are ripped open by predators or storms, fish in ponds get swept into channels by rainfall, others are released accidentally during transport. Bighead and silver carp that were introduced to China's plateau lakes in the 1950s have cleared those waters of whole species of indigenous fish. And Asian carp, which were introduced in Mississippi Delta catfish ponds...
Experts say aquaculture done right could easily feed the world without polluting it. A favored method of environmentalists is the hard-walled pen system that isolates the fish from the surrounding water in 40-ft.-deep tanks and catches their waste in the bottom. Even more secure are containment ponds built onshore into which seawater is pumped. Agrimarine Industries in Cedar, B.C., is testing a site with eight tanks 100 yds. from the sea and 40 ft. above it. But production costs are expected to be about $2.20 a fish--double what it costs to raise a salmon...
...friendly methods. About 75% of salmon-farming firms are relatively small and privately held and don't make their finances public. The large, publicly held companies in the business--including Dutch food producer Nutreco Holdings NV and Norwegian seafood giants Fjord Seafood ASA, Stolt Sea Farm and Pan Fish ASA--are feeling the pinch. Pan Fish recently reported a quarterly operating loss of $18.5 million...
...Chinese, who have been farming fish for 2,000 years, pioneered a method in which nothing is wasted. Farmers dig ponds around rice paddies and feed carp in the ponds with weeds from the rice field. The silt from the ponds is used as fertilizer for the fields, and crabs are grown to eat pests. Some of those techniques are being adapted in Western fish farms. In Tuscaloosa, Ala., Dan Butterfield, 59, raises bass, carp, catfish and other species in the same pond; the sun and the catfish feces stimulate the growth of phytoplankton, which feeds the other species...