for healthy oscar, you should start with a variety of
foods. while still in the juvenile stage, treat it with
high protein food to expedite the growth. but should have
regular food to avoid problem later on. i started my oscar
with morning feeding only, good for two minutes grabbing, then
removed whatever left unconsumed to lessen bio-loads. it grows
1 inch every months in 6 months, then slow down when doing some
natural oscar activities like bulldozing substrate, liplocking,
and moving anything around the tank.