Hai Jennifer, thank for kind links. In fact not all Ambystoma are that difficult to breed; I keep mine cold during the winter on land (close to freezing) and then confront them in the spring with cold water and higher air humidity by setting them over in a tank with waterpart a little land area, closed off with a full lid (high humidity). Even setting them over in water (not too deep) if need be. So far A. mavortium, maculatum, opacum and macrodactylum have been bred on some occasions in Europe and I hope to try next spring with A. laterale. And I thought there was even someone who bred A. annulatum too, but have no details of these however ...
I will see if I find the time to try and translate my Dutch A. macrodactylum article... ;-))