So the answer to all your questions are part yes and part no, its not certain. I do know that these fish are wild babies, and if there were other ones in the hobby, then they would be breeding them already right? And for these "common" axanthic to mature and breed will probably take another few years, and that is if you have a few to keep together right? The fact is there are not many silver arowanas breeding in captivity. Just think the albino silver arowanas have been in the hobby for at least 20 years already, originally only from the wild, how many years did it take for people to be able to breed them and now market them in the past few years only. If it was so easy, wouldn't people make thousands of albino silvers 20 years ago? Just google for pictures., can you find any adults of the axanthic ones that are so common to you? Should have at least a few pictures right? Common sense bro