Thanks, frapadoodle. And no thanks on the pollen. Ours is just a little later but it will be here in full force within a month.
Jetman, I'm going to say a dozen. That would probably vary with different groups, but watching the "normal" behavior of mine, I'm going with 12. When I get a chance to get more, I'm going to bring this shoal up to about 18, I think. I've got the room, and I hope that will calm everybody down.
My problem now is, I'd like to get mature adults. I'm so afraid the ones I have would tear up a group of teeny tiny ones like I've seen available. Not sure how that would work. At least half-grown. The last group I saw at an LFS were about 3/4" long.
I just hope the deaths are over. I think so. What a horrible week.