Yeah they are really neat. I have a couple of shots too of putting them in the tank. They never stop swimming. I almost wish that I have gotten a couple more, but they should grow to 3-4", so seven individuals is probably a good number.
I should consider hatchetfish. I had the mollies in mind as a fish that would mostly occupy the upper area of the water, but hatchets would hold tighter to the water's surface. I also want to have a single centerpiece that can swim around in the middle and I have a couple of different cichlids in mind for that.