I know its been along time regarding this topic, but It took me a year to truly understand and experience every certified word you typed sir, I struggled with Aros and FL with pellets off n on,,,,, I spoiled them too much with verity of food tell they no longer humble to the pellets anymore, now going through the next week with my Golden Arowana , i hate to say it or do it, but its really frustrating, I'll starve the living out of him this time LOLWhich is precisely why it won't eat pellets. Stop feeding all other foods, wait a couple of days & then feed him pellets soaked in bloodworm juice.
After a few days of that start reducing the BW juice, and after a few more days just feed the dry pellets. The more "options" that you give some fish, the more pickier they become until the point where they have trained you.