The Chinese sturgeon were introduced to the park in 2008 , and as of 2013 , Ocean Park houses nine Chinese sturgeons , displayed in Chinese Sturgeon Aquarium – Yangtze Exploration . To mark China 's hosting the Olympic Games , the Chinese Central Government made a gift of five rare Chinese sturgeon , symbolising the five Olympic rings , with Ocean Park as the recipient . Two were bred by the Yangtze River Fisheries Research Institute and three by the Beijing Aquarium . The fish made their debut on 20 June 2008 . However one of them died after a few days , apparently bitten by a barracuda . On 14 July 2008 , it was announced that Hong Kong would receive another five sturgeons from the Chinese National Aquatic Wildlife Conservation Association in time for 8 August opening ceremony , to complement the four fish already in situ . The park 's management decided to evict its sharks from their aquarium in favour of the new arrivals . On 12 December 2008 , a second sturgeon died from an infection . A third one died from an injury and two nine-year-old sturgeon were found to be ill in January 2009 . The two sick fish , measuring 2.3 m and 1.5 m , were returned to the Yangtze River Fisheries Research Institute for expert care
opening ceremony
2008 Summer Olympics opening ceremony
Ocean Park Hong Kong