the new aro and tigers look great
BUT the tigers are not indos or thin bars they are silver tigers datnoides qudrafatulartus (spelt wrong )
i wouldnt bother with white bait it leaves a nasty oily mess on the water surface
your best foods will be prawns for all the other fish and meal worms for the aro you can feed the meal worms on diffrent foods like pellets tetra prima or flake fish food and even carrot
brake the prawns into small bites get the cheap £2 bags of prawns from iceland supermarket
the bigger the aro you buy the longer it takes to start feeding after you have moved it a aro the size you have can take up to 1 month before it feeds which is nothing to worrie about it can go 2 months easy without food
the sev will be fine with the aro the worst that can happen is the aro will kick his ass