With the new fish added to the tank, our population entailed:
Mongo, the largest fish, a Golden Barb
The Sheriff, a Cherry Barb (these two were the only survivors of the dark times, when the filter wasn't running)
Sam and George, a pair of Neon Tetras
Marty, the remaining Zebra Danio
Pauly and Molly, the Black Mollies (I presume them a mating pair, as I've seen at least one miniature Black Molly, who unfortunately didn't mature)
and the new guys:
Micky, the Micky Mouse Platy
Tony, the Tiger Barb
Chloe, the Glofish
and Wonder Woman, the new crab.
This morning, I found Micky curled and floating. I've fished him out and disposed of him. The other fish appear to be doing okay; we'll see.