I agree with cjs4873 paint the back and maybe even the sides of the tank. Get some driftwood they can chill behind. Skittish is just the way there are. Mine were like that when I first got them to. Now they come up to the lid when its feeding time. Also spend some time in front of the tank they will get to know you. I can walk around the tank all I want but if a friend comes over and walks close to the tank he gets jumpy so they will start to reconize you.
Hmm this is the worst idea I've heard yet, not only dumb but a expensive feeder.id take your fish and put them on a jardini diet haha( meaning id feed them a jardini arowana every once in awhile) just for laughs. ha
