Some Saratoga Information from Geoff Volter (Voltzy)
They breed in October - November where females (which differ to the other arowanas - paternal) carry around 40-80 large eggs. The eggs hatch within a week and are free swimming a week or so after that.
They are released by the mother at around 2 inches in length 4-5 weeks post hatch. The female will release the fry into "safe areas" yet accept them back into the mouth when danger approaches. I have observed this myself, it incredible. There must be some level of communication which we don't understand yet.
Females need to be at least about 55cm to be mature which would be 3 or 4 years with good growth.