ENVIRONMENTALISTS scored a rare victory when the World Wide Fund for Nature (WWF) Hong Kong announced yesterday that it had convinced Indonesia to ban exports of endangered fish. The Indonesian Government installed the ban after the WWF disclosed that the enormous Napoleon wrasse fish were being stunned with cyanide and dynamite by Indonesian fisherman. The use of these fishing methods destroys huge sections of the delicate reef. 'This is the result of hard work on the part of our organisation,' WWF Hong Kong spokesman Jo Ruxton said. 'This will help the fish stocks revive so that sustainable fishing can continue in the future.' Most of the gigantic Napoleon wrasse captured are exported directly to Hong Kong for restaurants. But Hong Kong officials said they would not impose a matching import ban here. 'There is no proof that all of these fish are caught by illegal means,' an Agriculture and Fisheries Department spokesman said. The announcement coincided with the opening of Ocean Park's $60 million Indo-Pacific Atoll Reef aquarium. Ocean Park has the largest population of Napoleon wrasse in the world. 'One of the Napoleon fish we have on display is over 40 years old and weighs over 100 kilograms,' aquarium curator, Michael Smith said. 'It is tragic that it could survive 40 years of the rigours of the reef to be snuffed out by a blast of dynamite.' The display features thousands of man-made corals and more than 5,000 fish, including a nearly two-metre giant grouper.