I'll echo the above, my bgks camp with 5 pictus with very little interaction, though I would definately concur on the hiding spots. You will probably need around double the number of good spots than you have fish as they never want just one (but will usually end up next to each other after a while anyway...)
ive only seen my bgk once since i got him at the weekend do they become less shy over time?ive even tried a stake out in the dark to try and get a look at him
Yes they should become alot less shy over time. I have always hand fed mine and I think that goes someway to getting fish like the BGK to become less afraid and more active.
They are almost blind and just use their electronic organ to sense things. I used a rod with bits of cockle of whitebait on the end and progressively moved onto hand feeding.