River dolphins have not fared well in captivity! It seems over 100 amazon river dolphins were imported to the western world in the 1970's, and what do we have to show for it? 1.0 at zoo duisburg, this male is aging and his companion died back in 2006. The last river dolphin in the united states died in 2002 in Pittsburgh Apparently the problem was that these dolphins do not sleep like other cetaceans, they need to be held up by the slope of a river bank... So many of these animals slowly died of sleep deprivation. Animal rights activist have used zoo's poor history against them, so I have heard no news of future imports. The DWA's owner actually wanted Amazonian dolphins to fill the current Orinoco river habitat now occupied by manatees. Pink river dolphins seem to be more common in their homerange countries. For example the Valencia aquarium in Venezuela has a breeding group of 2.5, I have heard of several zoos and aquaria in Brazil that claim to have them as well, and I know for sure the Iquitos zoo in Peru has an older male (in a terrible enclosure!) The Yangtze finless porpoise has actually been quite successful in captivity, the Institue of Hydrobiology in Wuhan has 3.1 (two of those born at the aquarium) Just imagine if a captive population was established!? With fewer than 1,000 remaining in the Yangtze this would be a spart thing to do, so they don't go the way of the baiji. Speaking of the Baiji, have any of you ever thought of cloning? The Nanjing Normal College's genetic resource center has genetic material from numerous baiji the died through out the years. This could offer an entire population just from one cloning project... But what species would be the surrogate? I was thinking bottle nose dolphins. To my knowledge there are no Indus/Ganges river dolphins in captivity. This is a shame because little is known about them, they are small and love swimming in circles (therefore don't require the space of other species). Their populations are also declining in their rivers. I think it would be amazing if a zoo created a river goddess section with dolphins/porpoises from the world's rivers and actually bred them. It could be a revolution in the zoo world! I really don't want to see any other cetaceans go the way of the Baiji, and now that we have more knowledge on the husbandry of cetaceans (including Amazonian river dolphins) don't you think more zoos/aquariums should be trying to get them? I for one do not want to see carribean manatees in the Zoo Duisburg orinoco enclosure. What do you think?