Asians have been bred in much higher number then any other arowanas combined. It is exponentially easier to spawn long term captive fish vs wild fish or even short term captive breeding. Things like leis or blacks are mainly wild fish and that makes them harder to spawn since they will be more effected by the triggers. This same thing doesn't apply to prolific species of fish like rays or cichlids. They because of their nature are easier. Some individual groups of subspecies are harder then others from those groups of mention fish but generally speaking. Also I believe that they have easier to replicate conditions/triggers to spawn then those of any other arowana. The other sp. Of arowanas experience a much more drastic change in seasons compared to Asian aros.
Now having said that not as many people have had as many groups of other aros as with Asians. Most that have other aros have one or two. Not great for in house breeding. I am personally going to try breeding all legal aros in the us. Not expecting much but I want to try.
I am not exactly saying the op shouldn't try it. What I am saying is that aussy aros are more aggressive then sa or asian aros so it only makes it even harder. If the op has the funds(braised off his resent sales thread, maybe not) I say go for it. As I said get a group to have a group not with the sole goal to breed as you will most likely not succeed.
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