I e-mailed someone with a similar question awhile back, whom I had located on this website - hellbenders.sanwalddesigns.com
This is his reply to me:" Yes, Japanese giant salamanders can be bred in captivity. There is actually a zoo in Japan that is having a lot of success breeding these salamanders. The problem though, is that the streams they came from in the first place are in pretty bad shape. So now they just have a lot of captive bred giant salamanders, but most of the natural habitat is gone. One thing about captive breeding is that people will no longer need to take giant salamanders from the wild if they want to keep one in a zoo, etc. This used to be a big problem, so hopefully captive breeding will reduce the loss of populations by overcollection."
I did not ask about the Chinese species, or the name of the zoo in Japan. And a new question I now have is: What will happen to the SURPLUS offspring produced by the captive breeding effort, if they cannot be re-introduced?}