Blueberry is a dyed arowana. The dye will wear off soon and you have a silver.
(1) Live feeder fish are basically the WORST possible diet for arowana's. I don't care if you use guppys or gold-fish, they all contain thiamesse. In short, the chemical thiamesse stops vitamin b1 absorption, eventually causing neurological disorders. Basically, just don't use them.
(2) I wouldn't use the dried red shrimp. Instead of dried, go buy some frozen krill from your lfs. Arowana's love it and it's basically the most natural diet you can get for them. If you pick the right one, pellets/sticks can be good but I wouldn't use them as a staple. Use a combination of krill, prawns and pellets/sticks and you should be good.