They're currently housed in a 46 gallon planted tank. In addition, I have a 10 gallon planted shrimp tank.
Is it ridiculous to even think of housing seven Sids in a 10 gallon? It's medium planted with a sand substrate, and over-filtered enough that water quality wouldn't be a problem, but is it just way too small for them?
The other thing I was considering is splitting them up between the two tanks, so that their impact is lessened in the community tank. I know that they're social, schooling fish, but my Sids barely interact with one another, much less school together. If I look over at the tank at any given time, I'm likely to see seven Sids in seven different locations - unless there's food, of course

Do you think they could be happy as one trio and one quartet? If I split them up and don't notice any behavior changes can I assume they're happy? Or is splitting them up a bad idea?
I hate to give up on them just yet. They're pretty cute little devils, and they cost me $90. However, if I can't make this situation work, I will find them a new home. Anyone in the Portland, OR area should feel free to start campaigning for them!
If anyone has more experience with these fish than I do, I would very much appreciate your help. For simplicity, I have highlighted the questions I'm hoping to have answered. I tend to be rather long-winded so I thought this might be useful.
