The shark is gone and the male platty is much more relaxed. My sons tank is a 14 gal and my daughters is a 10 gal. My daughter's tank, which we will stock with much more thought, includes two platty's and two albino corys. That's it for now. My son's 14 gal tank now has 2 albino corys, 1 platty, 1 bamboo shrimp, and 1 pictus. The pictus plays well with the corys but will nudge them out of the way if the corys get too close to his rock. He has never tried to nip or eat them.
Thanks again guys! Great forum!!