I Love BBG and Always Jump a@ the chance to get them, AS long AS FW BBGs are in.
I agree that you need a reasonable sized group as they like to spar and defend territroy.
Mine are fed on a mix of food but they will always readily take Hikari Micro Pellets.
They Love Bloodworm and Daphnia and Mozzy Larvae(plenty off Daphnia and Mozzy Larvae down the local allotments).
Mine Like resting on the leaves of the anubias and crypts.
It also Nice to get some females - But do not know how to distinguish. All I know is that if you manage to get some, When It wants to mate it wil start flashing the males Bright Orange and Yellow and choose a spot in the tank and dart around it for ages.
I once had eggs but other fish ate them.