I also really love rummynose tetra. I plan on adding 5 to my tank once my new pearl gourami has settled in a bit (only had it a few days). My lfs has them on offer at the moment... 4 for £5. They have a nice community display tank with various fish in it, including a large shoal of rummynose tetra. Even when 4 or 5 get separated from the main shoal they stick together and form a mini-shoal... and from what others have been saying it sounds like they are very good shoalers, which will look great. I think they look fantastic with their irridescent blue sheen, super-red nose and striking tail markings... they certianly caught my eye.