Something to consider, a single BN would prolly be less of a load on the tank than 6 cory's... the cory's will be more active, but the look of the BN is cool (particularly the male) also, w/ the angel or gourami q, how tall is the tank? remeber angels can get up to 12' tall, and like to have vertical room beyond that... if going with the pearls, I would go with a mated pair (one male, one female)... I've heard multiple males will fight w/o enough room.... and the way my pair act together is cool... I have heard that the male will get really agressive around mating time, but only if something gets too close to his nest.