Okay a quick bit on firebellies....they are quite cool!!
First are we talking about Chinese or Japanese Firebellies? A few good general articles here:
http://www.caudata.org/cc/species/Cynops/C_orientalis.shtml
http://www.petshub.com/forums/archive/index.php/t-3893.html
Habitat - Vivarium preferred - most will swim actively at night and sleep nestled in some spaghnum and ferns during the day. The water doesn't need to be filtered but it does need to be declorinated and kept quite clean as they can be prone to bacterial infections. Make sure they have a good cool humid ground space - clean, non fertalized topsoil works well and then spaghnum moss and plant out with low lying types of plants like ferns - small non-sharp edged plants - no flax types or anything that can slice their skin as they have no scale protection. Water deep enough to dive in and a few floating aquatic plants to top off. And a bit of wood to climb from one to the other.
Food - when small - microworms and as they get larger - whiteworms, waxworms and soft small mealworms. Check Biosuppliers for them or start your own culture.
http://www.ak.planet.gen.nz/~bio/ - Biosuppliers
http://www.fnzas.org.nz/articles/food/microworms/ - Culturing
Basic care - the oils in our skin can be harmful to them - so ensure your hands are clean and WET when handling - but even then do not handle often.
Breeding - only one successful brood in NZ as of 2002. I have heard (but not seen) that there have been two other successful broods since then. The difficulty is getting the right humidity, food level balance, and a simulated environment.
Best chance for success - RESEARCH and get an older pair - but the person selling you must be able to sex them - and this can be hard - so either get 6 or so and hope for a pair - or wait until you are sure of the sexes...however they do still have their own personalities and not all pairs will like each other - much less mate and then you end up with having to doctor bitten tails and bullied hearts - so having more and letting a pair naturally establish themselves is a much better (albeit more expensive) way to have even a chance at breeding....
Okay back to work - hope this helps!
~FancyFins~